Official Quant thread for CAT 2013

@soumitrabengeri
@pari19O1 said:
in such questions where the remainder comes out to be the same....find the HCF of the difference between the given numbers..and that will be the required answer....say the numbers be A+r, B+r, C+rso on calculating the difference u will be able to eliminate the remainder part that is common to all the three numbers...the above question is reduced to find the HCF of 32, 48, 80.now solve and u will get 16 as the answer..
Thanks. Superbly explained. Easily understood
@hari_bang said:
whts wrng in my solfr select anyoneee card out of ths 4 cards 16/52aftrrrrrrr tht 2one...12/51likee diss(16/52)*(12/51)*(8/50)*(4/49)
First card 16/52, second card 3/51 third card 2/50 fourth card 1/49 because now I have to select cards of the same suit as my first card.
@Crysis said:
@hari_bang said:76% of 76% of 76% of 76% of..................................of 75 anyone wll tell me sol0.76^n*75 => 0.76^n => nlog0.76 log75 = log(25*3) = 2log5+log3 = 2(1-0.301) + 0.477 = 1.875log0.76 = log76 - 2 = log38 + log2 -2 = log 2+ log2 + log10 + log2 -2 = -0.097(rounding off log 38 to log40 = log4+log10 = 2*log2+log10 )=> n((-0.097) => n> 1.875/0.097 => n > 19.32 so i assume n min can be 20 lots of assumptions so might be a near miss
:)
@hari_bang said:
no my ans is nt dis... my ans 256/270725
What's the OA? :o
@ankita14 said:
First card 16/52, second card 3/51 third card 2/50 fourth card 1/49 because now I have to select cards of the same suit as my first card.
yaa it can be...

@ankita14 said:
What's the OA?
kal se
@hari_bang said:
What will be the probability of having 4 selected cards ace, king, queen, and jack of exactly one suit?
4*4c4/52c4??
A potter asked his two sons to sell some pots in the market. The amount received for each pot was same as the number of pots sold. The two brothers spent the entire amount on some packets of potato chips and one packet of banana chips. One brother had the packet of banana chips along with some packets of potato chips, while the other brother just had potato chips. Each packet of potato chips costs ` 10/- and the packet of banana chips costs less than ` 10/-. The packets of chips were divided between the two brothers so each brother received equal number of packets. How much money should one brother give to the other to make the division financially equitable?
A. 1
B. 2
C. 4
D. 5
E. 7
@mailtoankit said:
4*4c4/52c4??
bro...1 little mistk
que smjhnee me...
@hari_bang said:
bro...1 little mistk que smjhnee me...
answer kya hai??
@Sumi99 said:
A potter asked his two sons to sell some pots in the market. The amount received for each pot was same as the number of pots sold. The two brothers spent the entire amount on some packets of potato chips and one packet of banana chips. One brother had the packet of banana chips along with some packets of potato chips, while the other brother just had potato chips. Each packet of potato chips costs ` 10/- and the packet of banana chips costs less than ` 10/-. The packets of chips were divided between the two brothers so each brother received equal number of packets. How much money should one brother give to the other to make the division financially equitable? A. 1 B. 2 C. 4 D. 5 E. 7
Did by taking an example. Say number of packets 4 with one packet of banna chips included. They've got a sum of money for the pots which is a perfect square. So 3p+ b=perfect square, if cost of banana chips is 6, it fits. So one has 16 bucks worth of goods, one has 20. So pass 2 Rs.
@mailtoankit said:
answer kya hai??
4/270725
:)
@ankita14 - " They've got a sum of money for the pots which is a perfect square "" ????
@mailtoankit said:
4*4c4/52c4??
u got d ans or nt?:)
@Sumi99 said:
A potter asked his two sons to sell some pots in the market. The amount received for each pot was same as the number of pots sold. The two brothers spent the entire amount on some packets of potato chips and one packet of banana chips. One brother had the packet of banana chips along with some packets of potato chips, while the other brother just had potato chips. Each packet of potato chips costs ` 10/- and the packet of banana chips costs less than ` 10/-. The packets of chips were divided between the two brothers so each brother received equal number of packets. How much money should one brother give to the other to make the division financially equitable? A. 1 B. 2 C. 4 D. 5 E. 7
first bro---> 1 bana chip + some potato chips
second bro-->some potato chips
so,
p+20x =n^2
so, x=3 p=4 so n=8
hence first bro has rs=34
second bro has=30
so rs 2 shud be given by first to second
what is OA?
@hari_bang said:
u got d ans or nt?
got it correct..
@ashish100 - P+20x=n^2 ????
I am Not getting this part ,Sorry 😞

can b any 1 of dem

@Sumi99 said:
@ankita14 - " They've got a sum of money for the pots which is a perfect square "" ????
Cost of each pot=x, number of pots sold=x total money received =x*x--> a perfect square(as x is a natural number)
@ankita14 said:
Cost of each pot=x, number of pots sold=x total money received =x*x--> a perfect square(as x is a natural number)
quant kitni tej hai tmhari