Official Quant thread for CAT 2013

@Subhashdec2 said:
5,5,5,5=16,4,5,5=246,6,4,4=66,6,5,3=126,6,6,2=447?
ye wala 12 hoga na????
@amresh_maverick said:
1> Four die are thown . In how many ways the sum =202> No of sol a + b+c=41 , where all are odd and non negative integers
1. 6-a+6-b+6-c+6-d=24 =>a+b+c+d=4 Non neg int soln 7C3
2. 2x+2y+2z+3=41 =>x+y+z=38 Non neg soln 40C2
@vbhvgupta said:
a camel pursue an elephent and takes 5 leaps for every 7 leaps of the elephent, but 5 leaps of elephent are equal to 3 leaps of camel. what is the ratio of speed of camels and elephent
25: 21

#god save the eleph"A"nts!
@vbhvgupta said:
a camel pursue an elephent and takes 5 leaps for every 7 leaps of the elephent, but 5 leaps of elephent are equal to 3 leaps of camel. what is the ratio of speed of camels and elephent
taking 1 leap of camel = 5m and 1 leap of Elephant = 3 m
ratio of speeds C/E = 5*5/7*3 = 25:21 ??
@Dexian said:
ye wala 12 hoga na????
sahi bhai
35 hoga ans
@amresh_maverick said:
1> Four die are thown . In how many ways the sum =20

35 ?

5555 ---> 1
5546 ----> 12
6653-----> 12
6644-----> 6
6662------>4

1 + 12 + 12 + 6 + 4 = 35

@amresh_maverick said:
1> Four die are thown . In how many ways the sum =202> No of sol a + b+c=41 , where all are odd and non negative integers
1> 35
@amresh_maverick said:
1> Four die are thown . In how many ways the sum =202> No of sol a + b+c=41 , where all are odd and non negative integers
1-
coeff of x^20 in (x + x2 + x3... + x6) ^4

2- 21C2

not sure though
@amresh_maverick said:
1> Four die are thown . In how many ways the sum =202> No of sol a + b+c=41 , where all are odd and non negative integers
OA >
1> 35
2>210

Out of 5 apples, 10 mangoes, and 15 oranges, the number of ways of of distributing 15 fruits each to 2 persons is


a- 56
b- 64
c- 66
d- 72

1> 3x +y +z=40 where x ,y,z are +ve integers , no of sol ?


2> no distinct rectangles having integral sides such that perimeter is an integer less than 100 cm

Find the sum of all the real values of 창€˜x창€™ that satisfy the equation:243^log81(x) -2x = 2^log16(x)+2 -8PS: log x and the no is base , very difficult to type log
@scrabbler bro yeh wala solve karna pls
@amresh_maverick said:
1> 3x +y +z=40 where x ,y,z are +ve integers , no of sol ?
36+33+30+27+24+21+18+15+12+9+6+3=234?
@amresh_maverick said:
1> 3x +y +z=40 where x ,y,z are +ve integers , no of sol ?2> no distinct rectangles having integral sides such that perimeter is an integer less than 100 cm
2l+2b
l+b
l+b+x=49
51c2=51*25=1275?
@amresh_maverick said:
1> 3x +y +z=40 where x ,y,z are +ve integers , no of sol ?


198
@iLoveTorres said:
36+33+30+27+24+21+18+15+12+9+6+3=234?
i think ye 36 wala case nahi aayega.........
can u check...
@techgeek2050 said:
Out of 5 apples, 10 mangoes, and 15 oranges, the number of ways of of distributing 15 fruits each to 2 persons isa- 56b- 64c- 66d- 72
is it 72 ?
@Dexian said:
198
ye kaise kara @Dexian bhai

@rnishant231 said:
is it 72 ?
it's 66
@Subhashdec2 said:
ye kaise kara @Dexian bhai
pehle sabko 1 de diya.......
3x+y+z=35....
ab x=1.... y+z=33.......... 33
x=2......... y+z=30...... 30

and so on...
sum from 3 to 33.......