Venn Diagram - Optimisation

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[@rohanshenoynagar8482]

This video offers a lot of clarity on the subject! Thank you for making it so simple.

[@urmitaghosh4041]

In question 3 also we can apply the same logic that you applied in question 4 like x+y+z= 10 minimum value of X is 1 so y+z=9. But according to your answer it's wrong. Please point out the mistake in my approach

[@srvplwl]

hey, see carefully, y+z = 9 will give negative value of the students playing only hockey

[@lamborghiniveneno8423]

Ur answer is correct, 9 is the right answer , I m getting the same Plz go through the logic below 26 is the extra count, and since 8 is the exact no. of people who play all 3 games so 26-8*2=10 is the extra count remaining.as there is at least one person who like only F & C , so (10-1) = 9 , so 9 is the max no. Of people who like F & H only and C &H only

[@mohitrai5958]

@@lamborghiniveneno8423 9 cannot be correct bcoz if y+z =9 then all 3common is 8 so students playing hockey will be 9+8+1(min only hockey) =18 ..but it is given only 16play hockey..so by tht formula even if u find x+y+z=10...check we already have 8 for all 3..plus min 1 for hockey only ..so for hockey u can have 7 more at max..hence answer is 7

[@roshan5640]

@@srvplwl Thanks for this.

[@anuragsingh-td3rb]

Ab tab toh Sabha CAT ho Gaya hoga

[@anushajain4135]

Best video on this topic. Thanks iQuanta!

[@rashmimbendakaluru7225]

sir if i try to cross check, in 3rd sub que, if y+z=9 (a wrong option) then, c=8-(y-z)=> c= -1. (c)min= 1, from main question ok. But sir how can be choose the methods for solving. aways 50% of my dought is sloved thank u sir. got a great help, for understanding venn diagrams.

[@yatharthagarwal99]

Q4: I think the answer should be x=16; here's why: All 3 sports is given as 8 Minimize (only cricket region) to and Z as 1, 18- (x+1) = 1 X = 16 (There is no restriction on manipulation of other parts of the venn diagram. Put Y=1 (condition) and all of the excess value of the conditions into (only Football) and (only Hockey). The previous formulas aren't relevant as the condition and objective is different in the 4th bit.

[@gmhvskzhvsjk]

Sol It through equations or trail and errors .....if x=16 ,if you add all values a+b+c+d+e+f+g =42 which is wrong (contradicts)the given condition ,so check it..thq u

[@ishjoytalag8247]

sir can i apply this concept anywhere please tell em i have to give cat exam next month

[@sridipmishra626]

One doubt sir. Why cant the concept applied in 4th question, be applied in the third question.

[@mohitrai5958]

u can apply u get x+y+z=10..but all 3 already have 8 plus 1(min only hockey) so u can assign at max 7 to y+z

[@jyotirajput946]

👍👍👍👍👍👍

[@mahimaahi6522]

for the first question, why 13 cant be the answer? Like when we go through the diagram

[@GOUTHAMK-vn8fy]

Sir for first question, max of people who plays all three games can be 13 sir.

[@setulsheth2986]

thanks for making my life easy in DI-LR section.

[@jacky5ish]

Simplicity at its best ... very well explained ..

[@PraveenKumar-te6sd]

Hello sir third part of question is 9 I think sir it is d+e+f+2g=26 so g=8given so d+e+f=10 so e+f max value is 10-dmin value =10-1=9

[@PraveenKumar-te6sd]

Please tell me sir if it is wrong please let me know where iam wrong please sir

[@anmolratan5217]

@@PraveenKumar-te6sd hey, see carefully, y+z = 9 will give negative value of the students playing only hockey

[@dcvarsha5]

But sir aapne concept toh bataya hi nahi. Why do we need two equations. Why can't I just put exactly 1=3 and exactly 2 =3 in the first equation itself?

[@rashmimbendakaluru7225]

sir why we should not apply the method of last sub-que to the 3rd sub que...... could u reply us sir..... thank u in advance.

[@sumankumar56137]

thank you sir, awesome explanation, please add more video, your every video is best.

[@MrYOYOaman]

Even a 5 year old would be able to understand this.

[@payalverma2924]

Can you pls share link for similar ques like this

[@SHUBHAMKUMAR-vo6nm]

Thank you so much sir....each and every question was so well explained with tricks ....please upload more videos🙏💓

[@123rajuc]

Legendary video Thank you very much

[@guitarunique4592]

Way of explaining is wonderful.. Waitng for more such contents..

[@AatmikaShree16]

Sir, how do we calculate maximum value of null?

[@hemankpurohit1388]

Best in the country!

[@ishikasingh6015]

In frist question we can take 2 as min. value of exactly 2

[@renderingrini]

Thank you so much

[@jasleenhumne1540]

very nicely explained...

[@rashmimbendakaluru7225]

hey, see carefully, y+z = 9 will give negative value of the students playing only hockey. was the reply sent to other one. can u explain it sir

[@rimjhimsharma2775]

because hockey =16 and when you do x+y+z=17 (taking x +y=9) and only students who play hockey will then become negative which is absurd

[@jaspreetkaur2934]

Concept very well taught..

[@purohittutorial4898]

Sir,please answer my question. What is the max no of students who like exactly one sports? Is it 46 or 45?

[@lokendersingh3036]

its 37

[@headmaster3588]

Sir, for Q3..if we use the equation exctly 2 + 2(exctly 3) = 26 and given exctly 3 = 8 , implying exctly 2 = 10. i.e x+y+z = 10 ..max of y+z can be achieved by minimizing x i.e x=1 therefore y+z =9. but the answer is 7. Please clarify.

[@srvplwl]

hey, see carefully, y+z = 9 will give negative value of the students playing only hockey

[@randomstuff9092]

@@srvplwl please explain

[@SagarRBiswal]

@@randomstuff9092 y + z has some constraints i.e. it should satisfy all the given conditions. Therefore y+z can take only values from 2 to 7.

[@SagarRBiswal]

Also the method by which he did no 4 is wrong but in this particular question, the answer he got didn't violate any given constraints, there are some cases in which you will get wrong answer.

[@himanshugupta5812]

@@srvplwl can you tell me in Q4 why we can't take 18-{x+z} and taking minimum value of z =1 getting max value of X is 16

[@yogeshdhawan3488]

Question 3rd is legend.