Official Quant thread for CAT 2013

MBA CAT 2024
30631
@mani0303 said:
Everything seems fine except the highlighted portion - especially 8 that is unit digit of 2^11 or 2^31 or 2^51...But actually they would have given you the unit digit 6 and NOT 8,right?BTW,You shown have put tremendous effort in this one,Thanks
Can you cross check it again.......??????????
30632
@Tusharrr said:
@mani0303 97 IS answer for which one katrina one or other library oneAnd how
I think as they are two independent events,the prob of both of them being correct is 1/8*1/12 = 1/96

So,a + b = 97..and I really dunno for what sake they have given as 1/1001 and all;)

@floamiya - It's my mistake...Thanks
30633
@mani0303 No thanks please, i dint do any thing, you learnt your self, i only accept thanks after final selection, though its also not required.

God bless U...!!!
30634
81 pencils are to be distributed among 14 students. What is the minimum number of pair of students that must have got the same number of pencils?
30635
@mani0303 said:
81 pencils are to be distributed among 14 students. What is the minimum number of pair of students that must have got the same number of pencils?
2??
30636
@mani0303 11?
30637
@mani0303 said:
81 pencils are to be distributed among 14 students. What is the minimum number of pair of students that must have got the same number of pencils?
5 students?
30638
if A= 10! + 12! +14! + 16!......100!,highest power of 2 in A?
30639
@mani0303 what's the OA?
30640
@mani0303 said:
I think as they are two independent events,the prob of both of them being correct is 1/8*1/12 = 1/96So,a + b = 97..and I really dunno for what sake they have given as 1/1001 and all@floamiya - It's my mistake...Thanks
The probability that they get the correct answer, given that they got the same result, is what is asked. Possibly I am misinterpreting in some manner.

So the way I see it...the probability of both getting the same correct answer is 1/96.
And the probability of both getting the same wrong answer is 1/1001 (given)
So required prob is [1/96] / [1/96 + 1/1001] = 1001 /1097.

regards
scrabbler
30641
@nits_rocker said:
if A= 10! + 12! +14! + 16!......100!,highest power of 2 in A?
8?

If we take 10! out,then we ll left with (even + 1) that can't possibly have 2 in it

@sameersapre23 - it's 2
30642
@mani0303 said:
81 pencils are to be distributed among 14 students. What is the minimum number of pair of students that must have got the same number of pencils?
1 ?
30643
@nits_rocker said:
if A= 10! + 12! +14! + 16!......100!,highest power of 2 in A?
8 ???
30644
@mani0303 said:
81 pencils are to be distributed among 14 students. What is the minimum number of pair of students that must have got the same number of pencils?
2 pair of students ?
30645
@nits_rocker said:
if A= 10! + 12! +14! + 16!......100!,highest power of 2 in A?
8 ?

highest power of 2 in 10! = 8
30646

Q1/2/3: 2ND April: http://www.quantexpert.co.in/questionoftheday.html

30647
@PIIIMA said:
1 ?
It should be 2 :

segma 12= 78 plus remaining 2 will get 1 and 2 . so 2 pairs...
30648
@catahead said:
Q-2 B x-y+1=0
30649
@catahead said:
2)a and 3)c
30650
@catahead said:
C B C?

regards
scrabbler