Data Sufficiency Questions and Answers

Answer: B

From 1, we conclude that the man is the only son of Tanya's grandfather i.e. he is Tanya's father or Tanya is the man's daughter.

From 2, we conclude that the man's father is Tanya's grandfather. Since the man has no brothers or sisters, so he is Tanya's father or Tanya is the man's daughter.

Answer: A

From I, we have: B > T, B > C, V > B. Thus, V is heavier than each one of B, T and C. But V is not the heaviest. So, E is the heaviest.

Thus, we have the order. E>V>B>T>C or E>V>B>C>T. Clearly, B is third from the top.

Answer: D

From the two statements given in 1, the code for the only common word 'beautiful' can be determined.

From the two statements given in 2, the code for the only common word 'red' can be determined.

In I and II, the common words are 'rose and 'flower' and the common code words are 'de' and 'la'. So, the code for 'flower' is either 'de' or 'la'.

Answer: D

Correct answer: Neither 1 nor 2 is sufficient

Statement 1 says only boys play, which restricts who might play but gives no number. Statement 2 gives forty boys but does not say how many of them play. Together they establish only that the answer lies between nought and forty, which is not an answer.

Answer: C

Correct answer: Either 1 or 2 is sufficient

In a four-handed game partners sit opposite one another. Statement 1 places D opposite A, so the remaining two, B and C, are partners. Statement 2 puts B between A and D, which again leaves C opposite A and therefore partnered with... in each case the seating is determined and C’s partner identified, so either statement alone answers the question.

Answer: D

From 1, we know that the serials were screened on 23rd, 24th, 25th and 26th.

Clearly, D was screened second i.e. on 24th, Wednesday.

From 2, we know that one serial was screened between A and B.

So, A and B were screened first and third, i.e. on 23rd and 25th. But, A was not screened on 25th.

So, A was screened on 23rd and B on 25th. Thus, C was screened on 26th, Friday.

Answer: C

From 1, we conclude that Sulekha is the wife of Nandini's mother's only son i.e. Nandini's brother. Thus, Sulekha is Nandini's sister-in-law.

From 2, we conclude that Sulekha is the cousin of Nandini's husband, which implies that Sulekha is Nandini's sister-in-law.

Answer: D

Correct answer: Both 1 and 2 are sufficient

Statement 2 gives the rule - thirty years of service and age sixty - and says Ritesh is three years short of sixty, so he reaches it three years from the date of the statement. Statement 1 shows the service condition was met in April 2000. Only with both can the January 2006 date be tested against the rule, and neither alone contains both halves of it.

Answer: C

I. In 'right or wrong' and 'he is right', the common word is 'right' and the common code word is 'nik'. So 'nik' means 'right'. In 'right or wrong' and 'that is wrong', the common word is 'wrong' and the common code word is 'te'. So, 'te' means 'wrong'.

Thus, in 'right or wrong', 'sa' is the code for 'or'. II. In 'that right man' and 'this or that', the common word is 'that' and the common code word is 'pa'. So, 'pa' means 'that'. In 'this or that' and 'tell this there', the common word is 'this' and the common code word is 'ne'. So, 'ne' means 'this'. Thus, in 'this or that', 'sa' is the code for 'or'.

Answer: B

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

The stem gives Madan above Kamal and Arvind above Sharad. Statement 2 adds Kamal above Arvind, completing the chain Madan, Kamal, Arvind, Sharad and making Sharad the youngest. Statement 1 places Sharad below Madan, which was already implied by nothing and still leaves Sharad and Kamal unordered.