Data Sufficiency Questions and Answers

Answer: D

From 1, we conclude that Kapil was born on any one of the dates among 16th, 17th and 18th.

From 2, we conclude that Kapil was born on any one of the dates among 13th, 14th, 15th and 16th.

Thus, from both 1 and 2, we conclude that Kapil was born on 16th August.

Answer: D

Correct answer: Both 1 and 2 are sufficient

Statement 2 says Anil equals Vimal and Kunal together and the three total 32, so Anil is 16 and Vimal and Kunal share 16. Statement 1 makes Vimal and Kunal equal to each other and to Gagan, so each is 8 and Gagan is 8. Neither reaches the answer alone: the first gives no numbers and the second cannot split the 16 without the equality.

Answer: C

'59' means 'injurious habit' and '157' means 'stop bad habit' (from 1). Thus, the common code number '5' stands for common word 'habit'. So, '9' represents 'injurious'. Hence, 1 is sufficient.

Also, '59' means 'injurious habit' and '839' means 'smoking is injurious'. Thus, the common code number '9' stands for common word 'injurious'. So, '5' represents 'habit'. Thus, 2 is also sufficient.

Answer: D

From 1, we have: S = T - 20.

From 2, we have: V = T + 30.

Thus, from both 1 and 2, we have: V + S = (T + 30) + (T - 20) = (2 T + 10).

So, to get the required amount, we need to know the amount that Tarun has.

Answer: D

Correct answer: Both 1 and 2 are sufficient

Statement 1 gives Anita before Monika before Tanvy; statement 2 gives Tanvy before Ratna before Sonal. Joined at Tanvy they yield the full order Anita, Monika, Tanvy, Ratna, Sonal, so Sonal came last. Each statement alone covers only three of the five and cannot identify the last.

Answer: D

Correct answer: Neither 1 nor 2 is sufficient

Statement 1 puts both Q and T below R without ordering them against each other, so the lightest is one of the two but which is unknown. Statement 2 concerns only the top of the order. Together they still leave Q and T unranked, so the lightest cannot be named.

Answer: D

Correct answer: Both 1 and 2 are sufficient

Statement 2 says T’s mother has only two sons, A and B, so T is a daughter and A is T’s brother. Statement 1 makes A a son of K, so K is the parent of A and therefore of T - T is K’s daughter. Neither alone links T to K, so both are required.

Answer: D

Correct answer: Neither 1 nor 2 is sufficient

The two distances are each measured from Rampur, and without knowing the directions or the angle between them the distance from Devipur to Durgapur is not fixed - it may be anything from 5 to 35 kilometres depending on the geometry. Both statements together are still insufficient.

Answer: D

Correct answer: Neither 1 nor 2 is sufficient

Statement 1 makes A and B siblings and statement 2 makes B a son of D, so together A is a child of D. But nothing gives A’s sex, so it cannot be said whether A is D’s son or daughter, and the relationship asked for remains undetermined.

Answer: A

From 1, we have: P > M, P > K, A > P.

Thus, A > P > M > K or A > P > K > M. So, Akash is the heaviest.

From 2, we have: P > M, A > M, M > K.

Thus, A > P > M > K or P > A > M > K. So, either Akash or Prabhakar is the heaviest.