Official Quant thread for CAT 2013

MBA CAT 2024
4001

P = cos^2(25) +cos^2(35) + cos^2(55) + cos^2(65)

Then

1.5

P0

1

4002
@maddy2807 said:
total socks- 12select 412C4but i doubt it.
mein bhi wahi soch raha.. 12C4 galat lag raha hai.

14 kaise?
4003
@audiq7 12 me se 4 hi to select karna hai...who cares about what color..jo b aaye pahan kar chalte bano dats y 495 (12C4)

4004
@maddy2807 mene to kuch zyada hi dimag laga dia aur ye b soch lia k 4 sox same color k hone chahiye..WTF
4005
@maddy2807 said:
total socks- 12select 412C4but i doubt it.
bhai galat kyu lag raha hai , colour same hai, but identical ho jaruri hai ?
4006
@audiq7 said:
mein bhi wahi soch raha.. 12C4 galat lag raha hai.14 kaise?
a+b+c= 4
no of solution= 15
remove case of GGGG
so, 15-1=14
4007
@PSub yar agar sabhi socks diffrent hote to ye thik hai..

4008
@PSub said:
@maddy2807 mene to kuch zyada hi dimag laga dia aur ye b soch lia k 4 sox same color k hone chahiye..WTF
par yaar... kuch sahi nai lag raha solution me.
chal chod. age badhte hai.
4009
@amresh_maverick said:
P = cos^2(25) +cos^2(35) +cos^2(55) +cos^2(65)Then1.5P01
bhai question clear nai hai... please check.
4010
@maddy2807 said:
a+b+c= 4no of solution= 15remove case of GGGGso, 15-1=14
yar ye thoda explain karoge? solution ko jane do, bt this method always confuses me
4011
@maddy2807 yaar pata nahi formatting ho nahi raha hai

P = cos^2(25 degree) +cos^2(35) + cos^2(55) + cos^2(65)

what is the value of P ?
4012
@audiq7 i'm thinking the same..
4013

Minimum value of (3/2)sinx + 2cosx + 5

-5/2
-2
5
5/2
None

4014
@audiq7 said:
yar ye thoda explain karoge? solution ko jane do, bt this method always confuses me
look there are three colors
let them be a,b,c
where a= 5, b=4, c=3
we need to select 4 items out of these.

a+b+c= 4
so no of solution of this equations= 6C2= 15
but this contain the case where, c is selected 4 times, cccc
so remove 1 case
15-1= 14

4015
@rachit_28 said:
bhai galat kyu lag raha hai , colour same hai, but identical ho jaruri hai ?
haan but if identical then u pick one or more things , it is always one
4016
@amresh_maverick said:
Minimum value of (3/2)sinx + 2cosx + 5-5/2-255/2None
none?
4017
@amresh_maverick said:
@maddy2807 yaar pata nahi formatting ho nahi raha haiP = cos^2(25 degree) +cos^2(35) + cos^2(55) + cos^2(65)what is the value of P ?
2?
4018
@amresh_maverick said:
Minimum value of (3/2)sinx + 2cosx + 5-5/2-255/2None

none
4019
@amresh_maverick said:
@maddy2807 yaar pata nahi formatting ho nahi raha haiP = cos^2(25 degree) +cos^2(35) + cos^2(55) + cos^2(65)what is the value of P ?
2?
4020
@amresh_maverick said:
Minimum value of (3/2)sinx + 2cosx + 5-5/2-255/2None
hey raam...none aa gya mera to..