GMAT Ninja Quant Ep 1: Arithmetic
48:57
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@impkd
@impkd 4 сағат бұрын
Can you please explain why Option 2 seems to be the correct option for Question no.2? If social constructivism had not gained a level of acceptance, it would lead to a loose or no negotiation between the management and the workers for incorporating new technology. In this case, how can employees can gain any knowledge about the technology and it's implications on the overall workflow and other things in the company? Also why Option 1 can be Eliminated here? If social constraints are not considered, it would indirectly make the process of introducing new technology into play more flexible for the company , which means they are more likely to modernize in such a case.
@prashantverma1643
@prashantverma1643 5 сағат бұрын
Q4, each bar has same weight assume it to be 100 so the sum of each bar equals to 3×per bar weight and that bar has 0.96 finnese, now conside it as a percentage final bar has 96 % finesse and its weight is 300, 96% of 300 is 288, and the equation will be like 2x + y = 288, now you can select the value of x and from the answers given
@PaulNathanGibson
@PaulNathanGibson 17 сағат бұрын
For question 7, at around 58:47, can the equation |p-q+r| - |p-q+r| be equivalent to (p-q+r) - (p-q+r), since the expression inside the absolute value will always return a positive number, regardless of whether it's negative? As always, incredible videos!
@GMATNinjaTutoring
@GMATNinjaTutoring 15 сағат бұрын
While the absolute value expression will always return a postive number, we can't assume that what's inside the absolute value sign is positive. When we have something like |5|, we can say it's equivalent to (5) because the absolute value signs don't do anything. However, |-5| is equivalent to -(-5). At this point in the problem, we have |p - q + r|. From earlier in the explanation, we know that p - q is positive, but we don't know whether r is positive or negative so adding r to p - q might give us a positive number or we might have a negative. Since we don't know whether p - q + r is positive or negative, we can't say |p - q + r| is equivalent to (p - q + r). I hope that helps!
@PaulNathanGibson
@PaulNathanGibson 17 сағат бұрын
For question 6, how did you determine that x + 5 > 0? In other words, I'm failing to understand how you put 0 in the middle of x + 1 and x + 5. Any help on this would be greatly appreciated!
@GMATNinjaTutoring
@GMATNinjaTutoring 15 сағат бұрын
At that point in the solution, we need one of x + 5 and x + 1 to be positive and one to be negative. The only way to do this is to have x + 5 be the positive one and x + 1 to be the negative one. It's not possible for x + 1 to be positive and x + 5 to be negative because x + 5 is greater than x + 1. I hope that helps!
@ojassriv1758
@ojassriv1758 19 сағат бұрын
GMATNinja always saving me!
@alfredoherrera7812
@alfredoherrera7812 Күн бұрын
Do this kind of questions still exists in the new Gmat? I thought I read that they dont.
@kanishksingh80
@kanishksingh80 Күн бұрын
Hi, I have a serious problem with Passage 1, Question 2: At 18:32 you mention how they both agree that the attitude towards women's educational opportunities changed. But towards the end of the 2nd paragraph, it is clearly stated "Woody's evidence challenges the notion that the Revolution changed attitudes regarding female education". The part "it may have accelerated earlier trends" is not enough to refute Point D when the support for it is definitively mentioned. The whole point of the 2nd para was that Woody never believed that the Revolution changed attitudes of the people. Rather, it just accelerated existing trends which is a counter point to Kerber's thesis. Hence I do not understand how the answer is point B instead of D. I personally don't even think that Point B's explanation is super convincing as an answer choice.
@intriguefade
@intriguefade Күн бұрын
Hi Charles, really informative conversation. Just one small question, let’s say you do get a scholarship- what are the ways to increase the amount? Any plans to make a video on that?
@AnshulSriavstava
@AnshulSriavstava 2 күн бұрын
When do we know that we need to take into consideration the order of selection, for example in question 7 , while checking the statement 1 , we multiplied by 2 and in question 8 we didn't take into consideration the order of cookies.??
@rikhrajghosh9897
@rikhrajghosh9897 2 күн бұрын
Hi I just completed ur CR week-1 recent GMAT Ninja 13-Week Study Plan 2024-25, pls help me in interpreting my week1 CR results, i did 25 Lsat of sub-505 got 96%, then did 25 Lsat of 505-555 got 84% and then did 20 old OG of 555-605 got 45%. In old OG of 555-605 i was not able the able to understand them. So how should i improve ?
@lamissboughamoura8679
@lamissboughamoura8679 2 күн бұрын
In Q6 isn’t the answer supposed to be 4? Who can explain please
@GMATNinjaTutoring
@GMATNinjaTutoring Күн бұрын
Five integer values (-5, -4, -3, -2, and 4) satisfy the expression given in the question, so the answer to this question is (C). If you let me know whether you have any other questions, I'll do what I can to help!
@samriddhisinha1334
@samriddhisinha1334 2 күн бұрын
q6 - why does there have to be 4 different scenarios? the question's language doesn't indicate that the order of the customers matters right?
@GMATNinjaTutoring
@GMATNinjaTutoring 2 күн бұрын
We don't need to think of the four scenarios as representing the order the customers visit the restaurant. Instead, we could think of each entry in a scenario representing what a customer does. We could say the first entry in each scenario represents what happens if customer A does not buy a pie, the second entry represents what happens if customer B does not buy a pie, and so on. In this way of looking at the solution, it doesn't matter which order the customers visit the restaurant. All we need to know is whether a customer did or did not buy a pie. Since there are four different customers who might be the person who does not buy a pie, we need four different scenarios to represent every possible 'successful' outcome. I hope that helps!
@ShivaT-c7w
@ShivaT-c7w 2 күн бұрын
why is the pay on entry ; boarded between 6am-6pm wrong? even though there is an alternate pathway, the set seems right
@GMATNinjaTutoring
@GMATNinjaTutoring Күн бұрын
The combination (B) and (A) is wrong because there is an alternate pathway. For this to be the right answer, a person paying on entry MUST NOT have boarded between 6:00 am and 6:00 pm. However, someone could have boarded between 6:00 am and 6:00 pm, not shown a valid student id, and not boarded at a university stop, and they'd still pay on entry. This means we can't say a person paying on entry MUST NOT have boarded between 6:00 am and 6:00 pm. I hope that helps!
@prateeksharma3837
@prateeksharma3837 2 күн бұрын
In the 3rd question, i had a thought process that the director advised the actor to play the role in marx’s way so it will align to the claim that the production would be similar to original as marx style is from the 16th century, this was very convincing for me but i got it wrong. Can you help me with what went wrong with my thought process?
@poojaarora9504
@poojaarora9504 3 күн бұрын
Thank you so much for sharing the information. Can an international woman who joins the Forte Foundation receive a good amount of Fellowships and an application fee waiver? Thank you!
@GMATNinjaTutoring
@GMATNinjaTutoring 3 күн бұрын
Hi Pooja! I'd recommend getting in touch directly with Forte to learn more about how everything works there -- they'll know much more than we do about fee waivers and the odds of a scholarship when you're working directly via Forte. Enjoy the weekend, and thank you for watching everything!
@poojaarora9504
@poojaarora9504 3 күн бұрын
@@GMATNinjaTutoring Thanks for your response, Charles! Always happy to see you!
@aplisat6930
@aplisat6930 3 күн бұрын
Thank you for this!!
@GMATNinjaTutoring
@GMATNinjaTutoring 3 күн бұрын
Thank you so much for watching!
@niri_fc
@niri_fc 3 күн бұрын
Hey guys, in q2 like many people, I was stuck between choice A and E. However, my reasoning to eliminate choice A was that if polls are allowed 2 weeks prior to the election, I somehow connected that fact to affecting freedom of speech more and hence eliminated A. Where did I go wrong?
@AnnieOnTheMove
@AnnieOnTheMove 3 күн бұрын
I typed in Q5 in ChatGPT and it gave me C. Both statements together are sufficient. Can you explain how you got A as your answer?
@GMATNinjaTutoring
@GMATNinjaTutoring 3 күн бұрын
Charles explains this in the video starting from about 23:00. Check that out and please feel free to ask if you have any questions after watching that!
@lucianopavarotti-yq3pf
@lucianopavarotti-yq3pf 3 күн бұрын
You are awesome
@Ibragim-dp4ow
@Ibragim-dp4ow 4 күн бұрын
Hi, I just want to clarify something regarding the last question. You mentioned that for the digit 7, the same digits can be formed in 9 different ways because there are 10 digits. When we exclude 7, we are left with 9 options. When 7 is in the thousands place, it includes 0 as a valid digit, resulting in 9 ways. However, when 7 is in the middle or at the end, does it not count if 0 is included? If 0 starts the number, it would become a 3-digit number. Shouldn't it be 8 ways then? Specifically, there are 9 ways when 7 is at the beginning, and 8 ways when 7 is not at the beginning (providing we’re excluding 0). That would give us 8 × 3 = 24, in total 24 + 9 = 33 ways for just the digit 7. Am I wrong?🤔
@GMATNinjaTutoring
@GMATNinjaTutoring 4 күн бұрын
I think you're referring to the part of the solution that Charles labeled #2, but please tell me if I've got that wrong. In this part, Charles specified that he made the thousands digit a 7, this number would have three 7s in it, and there would be a fourth number that would vary. There are nine options for this fourth number (the digits 0-9 but excluding 7), and this fourth number could go in the hundreds, tens, or units spot. In this part of the solution, Charles did not say he'd put this fourth number in the thousands spot. Having done #1 and #2, Charles calculated there are 36 different numbers that would satisfy the "3 digits the same and one digit different" requirement if the number started with a 7. He then asked how many different starting digits could we have? In other words, how many different numbers could replace the 7 in steps #1 and #2? The question tells us that we're only looking for numbers greater than 4000, so Charles said he could have any number from 4-9 occupying the thousands digit. You're absolutely right that if 0 was in the thousands digit, we'd actually have a three-digit number. However, Charles was only looking at numbers that had a 4, 5, 6, 7, 8, or 9 in that digit, so we don't have to worry about what happens if there were a 0 there. I hope that helps!
@AusGreenLdn
@AusGreenLdn 5 күн бұрын
Q2 is far too subjective for there to be only 1 right answer
@bikrambhandari3997
@bikrambhandari3997 5 күн бұрын
Charles..your way of doing simple sets(not midly overlapping) with matrix was a gamechanger and how you simplified max and min questions were eye opening even as a mathematics student. Thank you!!
@GMATNinjaTutoring
@GMATNinjaTutoring 3 күн бұрын
Thank you so much! I'd be willing to bet that you're MUCH better trained in math than I am, so I'm honored that this helped a bit. We're always trying to find ways to make GMAT and GRE math more intuitive; sometimes really great math students think we're being silly, and I'm glad that wasn't the case for you. :) Have fun studying, and thank you again!
@bingpot04
@bingpot04 5 күн бұрын
for the second graph's 1st question, correct me if I'm wrong but it seems you've got the numerical value for DK from the second bar of 2009 when it's about 1979.The answer might still be DK, but for my understanding, just confirming
@yingying92
@yingying92 5 күн бұрын
730th like! I can't help but feel like it's a sign of good things to come on my upcoming exam in a few weeks! I'll be sure to report back with my official score of 730 then. A big shoutout to you and your team for all the hard work you do. Here's to everyone's success and a little bit of luck on our side!
@lucasettanni3301
@lucasettanni3301 6 күн бұрын
Incredible content, as usual - thanks Charles and GMAT Ninja team for creating this and sharing it for free with everyone!!!
@nisha48
@nisha48 6 күн бұрын
I am having trouble understanding question number 3 and would appreciate a little more explanation. I liked A but eliminated after reading each answer choose and chose C. C and E look similar where the rattle snake molts infrequently. In C, the determining factor for when the molt is when they are younger and in E the determining factor of when they molt is food.... Please help explain C vs E. Thanks in advance!
@DS-pg6wh
@DS-pg6wh 6 күн бұрын
Dear GMAT Ninja Team, over the last two weeks I went through all of your 18 GMAT Quant Videos. I want to say a big thank you to the whole Team; you did an awesome Job! I decided to watch your videos, because the Quant section really messed up my GMAT Test Practice scores. I don´t know yet whether the videos helped me to improve my score, but I definitely know, that I learned a lot and got to view a ton of questions from a different angle. Thus, for me it was absolutely worth putting the time in the course! Again, thank you so much!!! All the best for you guys!
@DS-pg6wh
@DS-pg6wh 6 күн бұрын
Great Video! Thank you very much!
@nyarinain1878
@nyarinain1878 6 күн бұрын
I am struggling with a lot of time vs accuracy issues especially on MSR and table. Please guide how to fix this issue.. it’s really frustrating!
@pkknowsnothing
@pkknowsnothing 6 күн бұрын
In Q5 the correct answer choice will be A and not D. You have calculated the correct answer but just chose the wrong option.
@GMATNinjaTutoring
@GMATNinjaTutoring 6 күн бұрын
That's a mistake. Harry worked through the solution correctly, then circled the wrong answer! It's just one more example of why you have to be really careful when working through these problems. It's so easy to make a small mistake. Thank you for pointing this out!
@realdiegobartolome
@realdiegobartolome 6 күн бұрын
It's interesting to think about how in that last reading comprehension, if the modifier at the beginning about how puzzling it actually was, if that had just been changed slightly it Would have changed the answers to two questions.
@vanshgulati9309
@vanshgulati9309 7 күн бұрын
I am doing super badly in integrated reasoning and that is killing my score on the test i have done sufficient practice does anyone have any advice any resource that could be helpful?
@ОлегМамай-ш1э
@ОлегМамай-ш1э 7 күн бұрын
For Q9 it is not stated that we utilized all the hall's length exactly. So m(4t+1)<= 296*3, not =. And thus there can be many many solutions.
@ОлегМамай-ш1э
@ОлегМамай-ш1э 7 күн бұрын
Thank you for the video, very helpful! Just have concern about Q6. It has a very bad wording choice - it unclear what the calculated ratio of 5:2:20 means. Is it the ratio just for the afternoon or is it the ratio for the whole business day? Ofc if it is just for the afternoon, then the question is obvious, but it is not explicitly stated. In fact, wording choice in this question means (at least for me) that this calculated ratio of 5:2:20 represents the ratio of orders for the whole day, that is for the morning plus afternoon (initial ratio after morning orders became 5:2:20). And in this case the answer would be 10. Yes, no such answer is provided, so we can understand that something else is meant, but why do I need to guess what was meant in the question?
@jonathanng9605
@jonathanng9605 7 күн бұрын
Where in Q6 did they say you can’t work fractional days? You’re assuming statement B is sufficient because you’re only testing the integers?
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
You're right. Given the chance to write this question again, we'd specify explicitly that only whole working days are possible. Thankfully, the people writing the questions for the real exam have much more time to test the wording of their questions, so you won't run into this sort of issue on the real test. Thank you for commenting!
@azwadmajmader8018
@azwadmajmader8018 8 күн бұрын
The answer of Question no-05 is 120+20{4P} which is directly similar to option(A). Then, why option-(D) is given as correct answer. Is that a mistake?
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
That's a mistake. Harry worked through the solution correctly, then circled the wrong answer! It's just one more example of why you have to be really careful when working through these problems. It's so easy to make a small mistake. Thank you for pointing this out!
@lucasettanni3301
@lucasettanni3301 8 күн бұрын
Charles and all the GMAT Ninja Team - you guys are amazing and are saving lives out here. Thank you so much!!!
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Thank you for the delightful message! Have fun studying, and please keep us posted on your progress -- we like good news. :)
@LakshmananMeyyappan
@LakshmananMeyyappan 9 күн бұрын
For Q5, I thought of it as 15*12*9/3!. Got 270 as the answer, but not sure if its the right thought process
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Yes, that works just fine! I chose to highlight a different path in the video, but your solution is equally valid. Nice work!
@reasonablehuman7682
@reasonablehuman7682 9 күн бұрын
Wow, these are nice !!
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Thank you! Mike's questions are nice, and so is his mustache. 😃
@reasonablehuman7682
@reasonablehuman7682 9 күн бұрын
Completely messed up the first passage, skipped that design 2 used 3 type B. Read it would use only 1 type B.
@reasonablehuman7682
@reasonablehuman7682 10 күн бұрын
In the 2nd question, first part. If say (for some hypothetical data) the number of builders missed out was 2 and the 1 city section was missed out, the answer would have been True right ? since they didn’t mention "exactly"
@vlogsthaa
@vlogsthaa 10 күн бұрын
Tim make it so fun! thanks :)
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Tim is definitely fun. Thank you for watching, and have fun studying!
@roshansanthosh8980
@roshansanthosh8980 10 күн бұрын
Thank you GMATNinja team.Thanks for answering the questions that actually matter.
@GMATNinjaTutoring
@GMATNinjaTutoring 9 күн бұрын
Thank you for watching, and thank you for the kind words!
@radyahhassan
@radyahhassan 10 күн бұрын
Hi, You've mentioned that the word "impact" is kind of like a buzzword. In my essays, I mentioned my long-term goal is to become a Finance Director or CFO of a tech company. Is that too vague? I gave some context before this to show the reader why I chose to move from IB to Corporate Finance, so will that be okay? I didn't state any entrepreneurial vision like starting a Company
@mitschaudhary
@mitschaudhary 10 күн бұрын
Thank you, enjoyed the process
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Thank you for watching! ❤️
@Nithin-j7v
@Nithin-j7v 10 күн бұрын
smooth criminal
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Annie, are you okay? So, Annie, are you okay? Are you okay, Annie? 🕺🏻
@RayJoshi
@RayJoshi 11 күн бұрын
Anyone has an alternative solution to the consecutive integer fraction problem?
@GMATNinjaTutoring
@GMATNinjaTutoring 11 күн бұрын
If anyone has an efficient, alternative solution, we'd love to hear it! Obviously you could take one of the "standard" mechanical approaches mentioned in the video (e.g. finding common denominators to add the fractions or doing long division five times and adding the results), but unless you're an arithmetic wiz, those time consuming and error-prone approaches are not recommended. Just remember that, as discussed in the video, the goal of your GMAT studying isn't to "learn" (i.e. memorize) a bunch of efficient solutions -- you certainly won't come up with a great solution path every time, but you won't strengthen those reasoning muscles if you don't TRY your best to come up with an efficient solution to every new, unique problem that you see. Reading an alternative solution to this problem might be interesting, but it's not likely to help you improve.
@yashwazir
@yashwazir 5 күн бұрын
Just plug in each value and see which one fits the equation. Much faster than the given solution.
@mizrahijean6168
@mizrahijean6168 11 күн бұрын
Bonjour, Concernant la question 5, j'ai eu une différente approche. En regardant les réponses, j'ai vu qu'elle comprennais toutes une égalité. Donc 2 des 4 étaient forcement égaux. Il m'a suffit de voir lesquels étaient potentiellement égaux (vu que deux étaient forcement égaux s'il semblent égaux, il le sont) sans prendre en compte les 0 et prendre la réponse qui présente cette relation. Cette technique ne fonctionne peut être uniquement dans cette situation mais elle m'a donné la réponse en 3 secondes.
@heilib3966
@heilib3966 11 күн бұрын
i love how he explains !
@GMATNinjaTutoring
@GMATNinjaTutoring 7 күн бұрын
Thank you! Tim is definitely a ton of fun. Enjoy your studies!
@aasthasinghal9668
@aasthasinghal9668 11 күн бұрын
Oh my god ..yes! Thank you so much for this video.
@GMATNinjaTutoring
@GMATNinjaTutoring 11 күн бұрын
Thanks so much for watching!! Glad to hear you found the video helpful.