Data Suffciency Thread for CAT 2011

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Hi All, I think there is no Data Sufficiency thread in PG.So Iam creating this Thread dedicated only to Data Sufficiency Questions and Fundas.So why wait Let Start :: :: Regards
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** MBA is hyped but post MBA life is over hyped **
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9. Is the square root of A an integer?
(1) The last digit of A is 8 .
(2) A is divisible by 6.

Statement 1 is sufficient. A perfect square cannot end with 8.
Statement 2 is not sufficient.
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If a, b and x, y, are all real numbers and a : b = 2 : 3, then what is (b + 3y) : (3a + 8x)?
I. x : y = 3 : 4
II. x : y = 4 : 5

1)if the question can be answered by using statement I alone but not by using statement II alone.

2)if the question can be answered by using statement II alone but not by using statement I alone.

3)if the question can be answered by using both the statements together but not by either of the statements alone.

4)if the question can be answered by using either of the statements alone.

5)if the question cannot be answered on the basis of the two statements.


Puys plz sove this

I think the answer is A
We have 3a=2b and 4x=3y
We need the value of (b+3y)/(3a+8x). In the denominator, substitute a and x with (2b/3) and (3y/4) respectively. The ratio becomes 1:2.
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My ans C.

Thanks
Ashish

@Ashish- How is statement B sufficent? They've just mentioned '2 out of 4 terms'. They haven't mentioned which two terms are 2 and 4. The numbers can be 1,2,3,4 or 2,4,6,8 right? Could you please explain how you got to the answer? My answer would be A
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9. Is the square root of A an integer?
(1) The last digit of A is 8 .
(2) A is divisible by 6.

JCU Singapore 2012 - 2013
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Hi Pratiksha09, Srihari123

Can you Plz Post the OA.?
Thanks
Ashish

Thanks with a :) , AB
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If a, b and x, y, are all real numbers and a : b = 2 : 3, then what is (b + 3y) : (3a + 8x)?
I. x : y = 3 : 4
II. x : y = 4 : 5

1)if the question can be answered by using statement I alone but not by using statement II alone.

2)if the question can be answered by using statement II alone but not by using statement I alone.

3)if the question can be answered by using both the statements together but not by either of the statements alone.

4)if the question can be answered by using either of the statements alone.

5)if the question cannot be answered on the basis of the two statements.


Puys plz sove this


Ans 5) can not be answered by both the equation,

consider a=3,b=4 n a=-3,b=-4 ration is same but not the value of (b + 3y) : (3a + 8x).
Thanks
Ashish

Plz post OA soon
Thanks with a :) , AB
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Mark (a) if the question can be answered by using the statement A alone, but not by using the statement
B alone.
Mark (b) if the question can be answered by using the statement B alone, but not by using the statement
A alone.
Mark (c) if the question can be answered by using either of the statements alone.
Mark (d) if the question cannot be answered even by using both the statements together but not by
either of the statements alone.

Q-The arithmetic mean of four arithmetic series A1, A2, A3 and A4 is 4, 7, 8 and 9 respectively. What
is the sum of the four arithmetic series?

A- The total number of terms in the four mentioned series A1, A2, A3 and A4 is 3, 7, 9 and 11 respectively.

B- The total number of terms in the four mentioned series is in a Arithmetic Progression. The number
of terms in two out of the four mentioned series is 2 and 4.

My ans C.

Thanks
Ashish
Thanks with a :) , AB
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If a, b and x, y, are all real numbers and a : b = 2 : 3, then what is (b + 3y) : (3a + 8x)?
I. x : y = 3 : 4
II. x : y = 4 : 5

1)if the question can be answered by using statement I alone but not by using statement II alone.

2)if the question can be answered by using statement II alone but not by using statement I alone.

3)if the question can be answered by using both the statements together but not by either of the statements alone.

4)if the question can be answered by using either of the statements alone.

5)if the question cannot be answered on the basis of the two statements.


Puys plz sove this

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Mark (a) if the question can be answered by using the statement A alone, but not by using the statement
B alone.
Mark (b) if the question can be answered by using the statement B alone, but not by using the statement
A alone.
Mark (c) if the question can be answered by using either of the statements alone.
Mark (d) if the question cannot be answered even by using both the statements together but not by
either of the statements alone.

Q-The arithmetic mean of four arithmetic series A1, A2, A3 and A4 is 4, 7, 8 and 9 respectively. What
is the sum of the four arithmetic series?

A- The total number of terms in the four mentioned series A1, A2, A3 and A4 is 3, 7, 9 and 11 respectively.

B- The total number of terms in the four mentioned series is in a Arithmetic Progression. The number
of terms in two out of the four mentioned series is 2 and 4.

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