Permutations and Combinations - I (GRE/GMAT/CAT) (Cases)

[@zzguimme]

Sorry if this was already mentioned but in 30:14 there is a small mistake: it's not "smaller than 4000 i.e. up to 3999" but "not greater than 4000 i.e. up to 4000". So the correct answer is 3x5x5x5 + 1 (which is "4000"). So the answer 376.

[@MP-ru9rx]

You are the best explainer I have found on youtube!

[@forooghkhodadadi3453]

Dear teacher, I am from Iran and found your videos really helpful. Thank you so much.

[@dryogeshchhetty]

an excellent video which i wish would have been there when i was appearing my 10th boards. Express my heartfelt gratitude pushpinder and perfect scores for having made the concepts of permutation and combination so easy.

[@JKB_ROHIT_SURYA]

I was struggling in this bcs I forgot the concept. U just made easy. Thanks.

[@prudvi01]

Do yourself a favour and watch this video at 2x. The best video on P&C on the internet!

[@girishahb01]

Superb, I didn't get in the classroom but here you have explained very structured and proper way. Thank you buddy

[@vinothspark]

you are the best teacher in the world !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@rabinkandel7082]

Very nice examples from ground root level. Perfect for understanding PnC !

[@karan16gupta]

Great video getting concepts of permutation and combination thoroughly cleared. Thanks sir

[@HarshAgarwal122]

A very good tutorial to learn basic of Permutation and Combination arrangement cases.

[@sidhurokrz]

This video truly brought me out of the bombardment of P&C . thanx alot pushpinder.

[@prasanth029]

Awesome lecture Mr.Gill, Iam satisfied with ur explanation and numerous examples.. I appreciate ur effort.....god bless u

[@afsynadifa1540]

I'm pausing mid video and just wanna say thank you for making this, i've been struggling with this topic my whole life and it helps me a lot!

[@omarreyesortiz5641]

At 4:28 the answer would be 4)625 if the question was opposite ? Like if the children come to get the chocolates instead of chocolates been distributed to them ?

[@VanLightning900]

Thank you so much. This is a great video. It's so much better than my textbook.

[@poojapardeshi8709]

it's really nice explanations with lot of examples ...thank you sir

[@monicamehta1020]

I love this tutorial and your fashion sense.

[@shristisoni]

though there are some mistakes but what an awesome way of teaching I was facing a lot of difficulty with this u made it easy for me thanks alot sir

[@raunakkhattar186]

Best video for permutation and combination concept

[@TheTestedTutor]

Nice and advanced examples! I just finished a short Combinations explainer video on my channel.

[@palakmalik93pm]

Good job Pushpinder sir. All the videos are totally helpful in all cases.

[@PerfectScores]

Thank you for the interest.

[@tinktokage]

This is extremely helpful and well-explained. Thanks very much!

[@rshabbir7]

Thank u so so much..i really was struggling wit this topic for quite sometime now ..you made it remarkably easy to understand ...!!

[@kinshukacharyaapril]

Thank you Sir for the great tutorial. Excellent for concept building.

[@gauravdawg]

I think the problem at 35:50 is solved wrong. A "Does not want to sit on even no of chairs" -> according to your solution A wants to sit on even number of chairs.

[@himanshugangwar7763]

true that, but still the answer is going to be same!

[@jaychavan653]

yea i he have considered even numbers where in A does not wants to sit on even numbers

[@pratiksachani8601]

Yeah you are true he made a mistake

[@pratiksachani8601]

@@jaychavan653 answer wouldn' be same bro

[@pratiksachani8601]

I got 7! + 6×6!

[@benjahnz]

Great work. I like how many examples you did. Thanks for making this video.

[@ChaitanyaVarmaD]

thanks a lot for presenting the "conditions topic", interesting and very useful its way to do: conditions first ,solving next

[@Real_Intelligence]

answer at 31:44 should be 376 because 4000 will also be included as a 4 digit number which is not greater than 4000.

[@jaiminkumarbarot9976]

how??? can you explain me? i didnt get it

[@PerfectScores]

The answer is 376. Annotation should be correcting that.

[@kevinjose2545]

ayush chauhan Isn't the answer 500? (4*5*5*5)

[@anubhavsinhq7726]

Yup exactly .. coz the questions mentions not greater than 4000.. so we add the 1 condition of 4000 to 375 .. making it 375 + 1 = 376

[@sejalsinha9756]

exactly one case for including 4000

[@Sakethram007]

Thats a great video. I am feeling very confident in this topic. Sir, Thank you very much.

[@preranahotkar595]

You're actually doing a great job by providing tutorials on something so easily accessible as KZbin. It's helping a great deal. Thanks for that! But I'd like to bring your attention to the glitches only so you can improve the quality of your videos. There are quite a few silly mistakes in the narration and notations that leave me confused momentarily. If you could have scripts or shortforms to read while you record, it would make you much more efficient. Also, the "not greater than 4000" condition was wrongly interpreted.

[@siddharthdumbre4980]

Yes he missed one case where number can be 4000

[@arjunbajracharya4169]

I really loved the way you have explained. great work and outstanding tutoring. Thank you.

[@vivekjibhakate2727]

though there are some mistakes the video is very helpful .. i liked it very much .

[@nicoargca]

As Russell Peters would say FANTASTIC!!!!!

[@how_to_fail_official]

Hey Pushpinder, you active here!? Wanted to point out a flaw in one of your questions' answer. "But not greater than 4000" takes 4000 as well. Answer, hence, must be everything that you said i.e. 375 + 1 = 376.

[@PerfectScores]

Thank you for the feedback.

[@prateekgupta7967]

until now i was struggling in the topic, this did help me a lot. Thanks a ton!

[@511Lee]

ay 29:39 for the CAT 2008 que, it says not greater than 4000, so it can be equal to 4000, right?

[@vasujhawar.6987]

Yes it should be 376.

[@pratiksachani8601]

Thank you pushpinder sir. Your voice is amazing. Little soft.

[@globalcitizen.7187]

Great job! Now I finally got the concept

[@123478candy]

Dude ur a really good teacher...keep up the good work👍🏻

[@shivaniarora4860]

Nice explanation of the concepts. Thanks a lot for sharing :):)

[@AalamSheikh]

Thanks a lot for such comprehensive explanation

[@princedutt983]

thanks alot ...best video ever..plz upload more of it

[@PerfectScores]

You can get it here: www.wiziq.com/course/69618-perfect-scores-premium-tv-gre-gmat-cat

[@rajvardhandeshmukh3257]

PerfectScores Vishal Jamwal If u use that logic then at time 37:13 the answer should be(2*3*(6!))+(2*4*(6!)) but the video shows (1*3*(6!))+(1*4*(6!)).

[@srikantam4796]

At 31: 51, the answer should be 376 coz the question says not greater than 4000 meaning less than or EQUAL to 4000 and hence adding 1 i.e the number 4000, the final answer is 376. Excellent video though. Thoroughly enjoyed it!

[@AmanPatel-on6eq]

Thanks a lot for this video. Also, you might want to consider using a PC pen and pad instead of writing with a mouse.

[@soumyasingh5356]

Used rn it was 8 years ago, but for you at your old time it was 4 years ago.. Then how do you expect him to use ipad

[@parthbhanderi2344]

great content brother!

[@pooriganesh5537]

very useful.I understood clearly.thank you

[@TheAshok1978]

Superb video. one comment : the problem of making numbers >999 to not >4000 the solution should include 4000 also according to question.

[@TheAshok1978]

sorry i see the correction already in the video

[@asderbva]

Great Video...Very Useful... But I would like to point out that at 31:45 for the prob on Integers the answer would be 376 because 4000 also has to be added since in the ques they have asked >>not greater than 4000.

[@EnochAbrahamEdiga]

Yes

[@Michelle-bl8sz]

Fantastic job on this lesson!

[@tenzintsundue6474]

I appreciate your work, very helpful video !

[@crazyhydraful]

man tysm for this video and i will make sure to check ur other vdso aswell since i am preparing for gmat this feb 1st,hope i do well :) thanks again!

[@yuliapetrunina8756]

@PerfectScoresThank you for this video. I have been struggling with this topic all my life. Now it is clear. PLEASE could you tell me where I can find practice problems?

[@PerfectScores]

Thank you very much. You can access all our content at perfect-scores.com

[@PradeepCRevanna]

First of all thank so much for your video Sir :) Waiting for your next video on Permutation and Comb..

[@vineetasoni913]

very nice explanation

[@gokulrathod2655]

very nice dear...!!

[@tejaswivyshnava6622]

tq u its really so clear to understand the concept

[@himanshugangwar7763]

You can solve these questions other way around too, though that may be tedious. for instance, at 23:55, you can assign tasks to people as well i.e people3 gets task2 (1 way), people1 can get any of tasks{3,4,5,6} i.e 4 ways and similarly people2 can get 3 no. of tasks(this is because people1 and people2 cannot get task 1). Now we have 3 tasks and 3 ways i.e 3!. which equates to 4*3*1*4!=72. Similarly, if people4 gets task2 instead of people3 we get 72. Adding two we can 144. It's true that this method is more confusing but i just wanted to establish that we can solve questions other way around too. As an exercise, Ive solved every question other way around!

[@MsAnukaAngel]

Thanks, Video was very useful, perfect explanation! Please help! how can i use the same approach for the following question? Greg, Marcia, Peter, Jan, Bobby, and Cindy go to a movie and sit next to each other in 6 adjacent seats in the front row of the theater. If Marcia and Jan will not sit next to each other, in how many different arrangements can the six people sit?

[@mathieubergeron2618]

+Anna Abzianidze 6!-5!*2! Where 6! is the total number of possibilities and 5!*2! is the chance that Marcia and Jan are together. To get this possibility, you consider Marcia and Jan as 1 item, so you get a total of 5! of them being together. But, you also multiply by 2! because inside the "item", there are 2! total possibilities. Once you have that, yous substract this number to the total of possibilities

[@rashmipandey7957]

dude ur voice is very catchy . great work

[@pirate0bloodyskull]

+Rashmi Pandey No, its not. Its rather annoying.

[@rashmipandey7957]

no its not so

[@bimantripathy7905]

very structured procedure. thanks

[@sirivlogs1422]

Good explanation

[@tarungrover6585]

At 31:10 answer should be 376, question says an integer not greater than 4000, so integer can be 4000 as well.

[@revanthmaddina8141]

I thought that your answer is wrong because not greater than means less than right

[@revanthmaddina8141]

I thought that your answer is wrong because in the question they mentioned not greater than 4000 which means less than 4000

[@revanthmaddina8141]

Such that 4000 wouldn't include

[@bimantripathy7905]

appreciate that you fixed few errors with annotations :)

[@revanthvardhan5829]

at 30:20 greater then 4000 means doesn't it mean that 4000 also includes in the range??

[@LandDestroyer]

Ya based off that language 4000 should have been included imo

[@parishilanrayamajhi4879]

And would be 376 in that case

[@1aniket]

376 is answer

[@YogiRajshakya]

You really made it so simple..🙏

[@renitalobo927]

at 36:35 u said wrong sir.the boy does not want to in even chair. Rest was really helpful.Thank u !!!

[@majczikita]

For last question when you look at the scenario where 4 th place is given either to 2 or 4 you say that 1st place has 3 choices left meaning you include 0 but 0 cannot be included because then it wouldn't be 4 digit number.

[@dhirendrah5701]

No, he has not included 0. because 4 place can have only one Digit that is either 2 or 4,but not both at a time, if we use 2in last position "4" will be left with us ie first place can be filled with (1,4,5)

[@inlakskumar9700]

No, he has made a mistake as he has counted 0 as well for the 1st position. The reason being, he considered 0,3 and 5 as 3 options for the 1st slot. So there's a mistake here.

[@vinitjagdale6904]

good job Preeti

[@sgpappu25]

Awesome concepts,..But the 2nd video on P&C needs more clarity... Anywaz it was very good...Thanks..!!

[@devanshshah7577]

Thanks for the video. Great job!

[@naoborot_kot]

The answer for the problem at 31:00 is not 375, but 376, because you also need to add 1 option where the number is 4000 (not greater than 4000 means that it can be equal to 4000)

[@siddharthdumbre4980]

Great video Also, at 31:45 it is mentioned "Not greater than" so number 4000 is valid, so total ways must be 375+1=376 ways

[@Silver_lad]

I believe the same thing. 376 is the correct choice.

[@surajnaik6236]

it ws v helpful.. thnkz

[@PerfectScores]

Thank you for your interest.

[@cyruscoolz]

Thank you very much....it is much simpler now

[@PerfectScores]

Thank you for your feedback!

[@vijaytadalai879]

And btw sir, THANK YOU! Your class is really interesting!

[@PerfectScores]

These types of questions would be part of another video

[@riyabasnet2757]

At 36:15 doesnt B have two ways , as B can either choose 1 or 8. I think it must be 2*3*6! . I am confused. Please make it clear for me.

[@Vyankateshpatole]

see as two conditions are mixed together so we have to take different cases and while taking cases we have to consider the mixed case only once so B having 2 places to sit in 1st case sits on one place and in second case sits on the 8th place

[@vjkrishnareddy8742]

@@Vyankateshpatole she must be 4 yrs older by then.... and lol u are one year older while i am replying

[@shravanikoushik4798]

it's a awesome video.....concept is very clear.yes,if we go in a structured manner its easy....thank u..plz reply to my question...i'am not able to solve that.

[@romatickkumar800]

love 8920505536

[@santoshchoudhury852]

thank you sir, video was really helpful..

[@ThePaponahmed]

that really good one. thanks

[@jagdishmore1908]

Really helpful

[@neha1agls]

Hi Pushpinder, I could only see Permutations & combinations I and II. For III and more it asks to subscribe. however at the end of your video II, u have mentioned that they will be free. please provide access to those as well. thanks

[@varamvaru]

superb.......

[@sanatparalkar8142]

Very nice video

[@mdraihanuddinchowdhury8906]

wow! Excellent

[@saiteja1297]

tq u very much..u save my head today...

[@tejunprasanna]

It was a very helpful video. However I have a doubt. What if the question has both positive conditions or bothnegative conditions. How to resolve such questions, please let me know.

[@PerfectScores]

My pleasure

[@Madhu85216]

Was very helpful, thanks a lot..

[@jascanka]

man, you are my hero!!!!!!!!!!!!

[@JEE-MentorVenkat]

Hi

[@mulanganekhwalivhe662]

thanks man... you are the best

[@ameypote8148]

thank you sir for video very helpful

[@sangameshpatil1911]

thanx a lot... it will be helpful ...

[@MadhanKumar-zx5lp]

super explanation !!!!!!!

[@nguyenkienchinh]

Clearly enough! It really help. Thank

[@chakradharrao8348]

thank u sir am very poor in permutationsu made me cake walk pls share in other topics like numbers,% blablabla......

[@esraamansour3405]

thanks a lot, very difficult problems.

[@sahilrajan5917]

at 44:19 in the second case if we give 2,4 to the 4th slot then shouldn't we be having 2 choices again for slot 1 since 0 cannot be filled there and we have to make a 4 digit number?

[@inlakskumar9700]

Correct, that's what I thought as well. We can have only 2 choices for the 1st Slot as 0 cannot be considered for the 1st slot since it's a 4 digit number.

[@AmanSharma-tt7in]

nope since the place can be filled in two but will eventually take only one digit leaving the other no. for filling the first place

[@candicerusser9095]

thanks alot.very very helpful.