CAT 2012 Kerala study group

MBA CAT 2024
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@arun4788 better late than never 😛 neva mind , so which all exams are u taking ?
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@joethaliath
As of now XAT SNAP and IRMA in addition to CAT
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@seetharam7 ALL THE BEST 4 UR EXAM BUDDY
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Just saw a post on tournament type ques.....

Most of u may know these shortcuts to problems of this sort(eg.tennis)
The above shortcuts can be applied to cut short the time...

If the total number of games in the tournament is k,
Then,
1)no: of players in tournament- 2^k-1
2)if top seed plays with bottom seed,2nd seed with 2nd last and so on and repeated in successive rounds,then,
The sum of the seeds assuming no upsets playing together in each rounds will be-
= 2^(r-x+1)+1
Where r-total no: of rounds
x-xth round.
Eg.if there are 128 players in 1st round-1st match-(1-128)=129;2nd match (2-127)=129.....
64 players in 2nd round-1st match-(1-64)=65;2nd match (2-63)=65......

3)total no: of players that a player could have played till kth round- 2k-1
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@arun4788 said:
y^3-x^6=271
which means 271 is divisible by y-x^2.But 271 is prime . Therefore y-x^2=1 or 271
y=1+x^2
which is satisfied when x=2 and y=5...x+y=7



Actually shoud'nt the answer be 10 + (-3) = 7 ??? if u substitute x=2 and y=5 in da 1st eqn...i dont think we will get 271....
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@raku1989 said:
116 people participated in a singles tennis tournament of knock out format. The players are paired up in the first round, the winners of the first round are paired up in second round, and so on till the final is played between two players. If after any round, there is odd number of players, one player is given a bye, i.e. he skips that round and plays the next round with the winners. Find the total number of matches played in the tournament.
(a) 115 (b) 53 (c) 232 (d) 116
U may find the question very simple. But most of us may take 1-2 mins in solving this. Anyways give a try and post the answer. I found the soln pretty interesting which can be done without even using a pencil in less than 10 seconds.
Since there is no tie involved in any match...for the winner to emerge there has to be 115 eliminations..hence 115 matches... had seen it 1990 :)
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@pugna
@pugna said:
Actually shoud'nt the answer be 10 + (-3) = 7 ??? if u substitute x=2 and y=5 in da 1st eqn...i dont think we will get 271....
ya.. answer is 7 ( 10 + -3 ) 😃
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@seetharam7 @Kevin88 all the best guys. I ll be taking my leave tomorrow morning.. to scout the area and like wont be able to come online tomorrow.. SO , do well.. My best wishes..
ps: any others giving the exam on Wednesday/ Thursday? My wishes to you too
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@Kevin88 said:
@Ash27Winz Anyway Ash..luks like you & i followed a similar approach..Two wrong assumptions from my end :1)Only counted rectangles which were not squares. 2)Made a silly mistake in counting & missed a few cases also.When l+b128,127............1 ------- 128 Cases.
For B=2 ----->127..................2 ------- 126 Cases.
. . .
For B=64 ----->65,64 ------- 2 Cases .So total Cases =2+.....128 =32*130=4160.BTW: When's ure slot ?
31st Oct dude!!
Wat abt u??

1390
Refer:
www.pagalguy.com/news/ive-got-...
R(n!) = Last Digit of [ 2a x R(a!) x R(b!) ]
where n = 5a + b
Example: What is the rightmost non-zero digit of 37! ?
? R (37!) = Last Digit of [ 27 x R (7!) x R (2!) ]
? R (37!) = Last Digit of [ 8 x 4 x 2 ] = 4
Here, how is 27 becoming 8 in the next step??
1391
@sriraman89 said:
Just saw a post on tournament type ques.....
Most of u may know these shortcuts to problems of this sort(eg.tennis)
The above shortcuts can be applied to cut short the time...
If the total number of games in the tournament is k,
Then,
1)no: of players in tournament- 2^k-1
2)if top seed plays with bottom seed,2nd seed with 2nd last and so on and repeated in successive rounds,then,
The sum of the seeds assuming no upsets playing together in each rounds will be-
= 2^(r-x+1)+1
Where r-total no: of rounds
x-xth round.
Eg.if there are 128 players in 1st round-1st match-(1-128)=129;2nd match (2-127)=129.....
64 players in 2nd round-1st match-(1-64)=65;2nd match (2-63)=65......
3)total no: of players that a player could have played till kth round- 2k-1
Source?? Online aano??
Just wanted a more detailed idea.....
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@Ash27Winz said:
Refer:
www.pagalguy.com/news/ive-got-...
R(n!) = Last Digit of [ 2a x R(a!) x R(b!) ]
where n = 5a + b
Example: What is the rightmost non-zero digit of 37! ?
? R (37!) = Last Digit of [ 27 x R (7!) x R (2!) ]
? R (37!) = Last Digit of [ 8 x 4 x 2 ] = 4
Here, how is 27 becoming 8 in the next step??
Got it now!!!
It's 2^7... Typo, it seems.. 2^a, it should be....
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@Vineeth555 @seetharam7 @Kevin88 :

ALL THE BEST FOR YOUR DATE WITH THE FELINE TOMORROW ~!!!~




Remember to come out all guns blazing !!!

P.S : Team.. will be in radio silence mode till tomorrow afternoon..was greeted by power outages & heavy rains, hence couldn't post yesterday !!!

So many new faces Malayalis are crawling out of the wood works of PG
Keep up the gud wrk !!!

P.P.S: First time tagging myself in a post...heights of insecurity !!!
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@Ash27Winz ^^^ Tomorrow bro !!! Afternoon slot at SNGC...
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@Ash27Winz said:
Source?? Online aano?? Just wanted a more detailed idea.....
I don't know if there is any online source....got this from a time workshop,will give u a broad view soon

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@seetharam7
@Kevin88
@vineeth



KILL BILL GUYS 😁 , All the best for tmrw 😃


P.s : dont know what the hindi text means 😁 , but am sure it serves the purpose 😃
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@joethaliath said:
@seetharam7
@Kevin88 @vineethKILL BILL GUYS , All the best for tmrw P.s : dont know what the hindi text means , but am sure it serves the purpose
I forget u! This can't happen and you forget me.i will not let that happen.......this is what it means in hindi.....
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@Kevin88 said:
@Ash27Winz ^^^ Tomorrow bro !!! Afternoon slot at SNGC...
All the best bro.. Glory will be ours!!!!
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ALL THE BEST TO KEVIN, SEETHARAM AND VINEETH 😃

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@Kevin88 @seetharam7 @vineeth All the best guys....do well and dnt forget to review.....