Data Sufficiency Questions and Answers

Answer: D

Correct answer: Neither 1 or 2 is sufficient

Statement 2 gives the scheduled time and statement 1 says the train normally leaves on time - but “normally” is not “always”, and neither statement says what happened today. The actual departure time therefore remains unknown even with both.

Answer: D

In 1 and 2, the common codes are '5', '#' and '3' and the common words are 'flowers', 'are' and 'good'. Thus, in 1, the remaining code '$' stands for 'really'.

Answer: C

Correct answer: Neither 1 nor 2 is sufficient

Statement 2 establishes that A and B are both D’s children and that B is a son, and statement 1 adds that there are three children in all. But the sexes of A and the third child are never given, so the number of sons may be one, two or three and cannot be determined.

Answer: A

From 1, we conclude that P is the mother of M and N, while Q is the daughter-in-law of P and sister-in-law of N. Thus, Q is M's wife and hence, M is N's brother.

From 2, we conclude that M and N are the children of S. Also, R is the daughter-in-law of S and sister-in-law of M. So, R is N's wife and thus, N is M's brother. Hence, M is either brother or sister of N.

Answer: B

Correct answer: 2 alone is sufficient while 1 alone is not sufficient

Fresh grass is green, so the question is what green is called in this language. Statement 2 says green is called brown, which answers it directly. Statement 1 renames blue, red and orange but never mentions green, so it leaves the question untouched.

Answer: D

Correct answer: Neither 1 or 2 is sufficient

Statement 1 says he missed the 10.25 and that trains run every five minutes; statement 2 says he did not take the 10.40 or any later one. Together those leave the 10.30 and the 10.35, and nothing distinguishes between them. The two statements narrow the answer to two possibilities, which is not an answer.

Answer: B

According to 1, Hitesh visited the zoo on any of the week days except Tuesday and Thursday.

According to 2, Hitesh's mother reached his house day after Monday i.e. on Tuesday.

Thus, Hitesh visited zoo two days before Tuesday i.e. on Sunday.

Answer: A

Correct answer: 1 alone is sufficient while 2 alone is not sufficient

The chairman visits on every Monday except the third of each month. Statement 1 places the Accounts visit in the second week of September and says Purchase was the visit immediately before, which must therefore have been the Monday of the first week of September. Statement 2 gives only the order of three departments with no dates at all.

Answer: D

In 1 and 2, the common codes are 'nip' and 'sre' and the common words are 'is' and 'beautiful' So, 'nip' and 'sre' are the codes for 'is' and 'beautiful'. But, the exact word for 'nip' cannot be found out.

Answer: D

Correct answer: Both 1 and 2 are sufficient

Statement 2 gives Lokesh 2500. Statement 1 makes Sumit ten per cent less, that is 2250, and Prashant fifteen per cent more than Sumit, that is 2587.50. Statement 1 alone gives only ratios with no anchor, and statement 2 alone says nothing about Prashant, so both are required.