Official Quant thread for CAT 2013

MBA CAT 2024
3881
@Brooklyn sorry it must be D
3882
@Brooklyn said:
Ifu1 = rt(3),u2 = rt(3 rt(3)) ,u3 = rt(3 rt(3 rt(3))) , etc,., u10 : u9 is:(A) rt(3) (B)3^1/10 (C) 3^1/20 (D) None of theseSomething same came in CAT this year Past IIFT q
B approach same as rachit
3883
@gs4890 said:
B approach same as rachit
wrong
3884
Shreya has with her cube made up of 27 smaller cubes. She names each face of the larger cube with an alphabet from A-F. She then starts writing a number from 1-54 on each visible face of the smaller cube that the face A gets the lowest sum followed by face B and so on. Shreya writes the digits in such a way that no two consecutive intgers are written on a particular face.(NMAT prep)

1) What can be least total on the face D ?
180 162 252 168 none

2)What is the least total on face F ?
255 258 260 262 none

3) What is the difference between the total on face A and faceB when the total on face F is the least ?
1 2 3 4 5

4) what is the maximum total for the face C?
325 327 329 331 none
3885
@Brooklyn yeah, checked u2/u1 should be 3^1/4 and so u10/u9 = 3^1/(2^10) :banghead:
3886
@Brooklyn none of these 3^1/(2^9)
3887
@Brooklyn said:
wrong
mera yaar D he aa raha tha 😛 confidence gir gaya aaj woh simple qstn nahi hua na islea :(
3888
@Brooklyn said:
Ifu1 = rt(3),u2 = rt(3 rt(3)) ,u3 = rt(3 rt(3 rt(3))) , etc,., u10 : u9 is:(A) rt(3) (B)3^1/10 (C) 3^1/20 (D) None of theseSomething same came in CAT this year Past IIFT q
u1 = 3^(1/2)
u2 = 3^( 1/2 + 1/4)
u3 = 3^( 1/2 + 1/4 + 1/8) ... and so on

u10 = 3^( 1/2 + .... 1/1024)
u9 = 3^( 1/2 + ..... 1/512)

u10/u9 = 3^(1/1024)

A bit high right now, may be wrong 😛 .. Option D
3889
@rachit_28 said:
@Brooklyn yeah, checked u2/u1 should be 3^1/4 and so u10/u9 = 3^1/20
wrong
3890
@Brooklyn said:
wrong
Answer kya hai uska bhai??
Maine aise kiya u(n)=3^(2^n - 1)/(2^n): 10 and 9 values put kiye toh 3^(1/2^10) aa raha hai..
3891
@rkshtsurana said:
@Brooklyn none of these 3^1/(2^9)
option correct value wrong
3892
@saurav5517 said:
Answer kya hai uska bhai??Maine aise kiya u(n)=3^(2^n - 1)/(2^n): 10 and 9 values put kiye toh 3^(1/2^10) aa raha hai..
correct hai sirji 😃
3893
@Brooklyn said:
Ifu1 = rt(3),u2 = rt(3 rt(3)) ,u3 = rt(3 rt(3 rt(3))) , etc,., u10 : u9 is:(A) rt(3) (B)3^1/10 (C) 3^1/20 (D) None of theseSomething same came in CAT this year Past IIFT q
u1 = 3^1/2

u2 = 3^3/4

u3 = 3^7/8
.
.
.
u9 = 3^511/512

u10 = 3^1023/1024


u10 : u9 = 3^1/1024 : 1 (none of these)
3894
@catter2011 said:
Shreya has with her cube made up of 27 smaller cubes. She names each face of the larger cube with an alphabet from A-F. She then starts writing a number from 1-54 on each visible face of the smaller cube that the face A gets the lowest sum followed by face B and so on. Shreya writes the digits in such a way that no two consecutive intgers are written on a particular face.(NMAT prep)1) What can be least total on the face D ?180 162 252 168 none2)What is the least total on face F ?255 258 260 262 none3) What is the difference between the total on face A and faceB when the total on face F is the least ?1 2 3 4 54) what is the maximum total for the face C?325 327 329 331 none
Seriously NMAT prep :wow: i was lucky such Qstn didn't come in my exam ;)

Solving ----------
3895
@Rage126 said:
@techsurge we can do it assuming 11 th term square to be 2 and 5th term square term to be 1 .

PS question give us liberty to assume any value since variable p is involved.
but what abt d ????
how do u know it shall fit
3896
@culdip : sir __/\__
3897
@culdip said:
u1 = 3^1/2u2 = 3^3/4u3 = 3^7/8...u9 = 3^511/512u10 = 3^1023/1024u10 : u9 = 3^1/1024 : 1 (none of these)
Correct soln 😃 for further doubts ask sirji 😁
3898
@gs4890 thanks pls solve.. me too got amazed.. donno wot these mock setters think of themselves.
3899
The value of the expression 7777 + 7777 + 7777 * (5 āļĢāļ— 77) * (11 āļĢāļ— 35) is:

(A) 1234321 (B) 12344321 (C) 77777 (D) None of these

My last q of the day, please take over post this, my time to :sleep: :sleep:

for any doubts r problems with my q contact my asstt @gs4890 😁 ;)

Edited
3900
@Brooklyn said:
Ifu1 = rt(3),u2 = rt(3 rt(3)) ,u3 = rt(3 rt(3 rt(3))) , etc,., u10 : u9 is:(A) rt(3) (B)3^1/10 (C) 3^1/20 (D) None of theseSomething same came in CAT this year Past IIFT q
d.. none... getting ans as 3^(1/1024)