Data Sufficiency Questions and Answers

Answer: D

Correct answer: 1, 2 and 3 together are not sufficient

The three statements together establish that R and T are X’s daughters and that Q, U and P are siblings of theirs - but the sex of P is never given, and nothing rules out further children not mentioned at all. The number of sons is therefore two or three, and cannot be settled even with all three statements.

Answer: B

From 1, total number of doctors in town = (1/700 x N) , where N = total number of residents in town. But, the value of N is not known.

From 2, total number of doctors in town

= (Number of wards in town) x (Number of doctors in each ward)

= 16 x 16 = 256.

Answer: D

From 1, the order is : E, B, C or C, B, E.

From 2, the order is : E, B.

From 3, the order is : A, D, E.

Combining the above three, we get the order as : A, D, E, B, C. Clearly, E is sitting in the middle.

Answer: C

Correct answer: Only 1 and 3

Statements 1 and 3 share exactly one word, ‘come’, and exactly one code, ‘na’, so ‘na’ must stand for it. Statement 2 contains neither the word nor that code and contributes nothing, so the pair 1 and 3 is both sufficient and the smallest set that works.

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

In 'You eat many mangoes' and 'Who others eat bananas', the common word is 'eat' and the common code word is 'Le'. So, 'Le' means 'eat'.

In 'You eat many mangoes' and 'They eat bananas and mangoes', the common code word 'Le' stands for 'eat'. So, the other common code word 'Na' stands for the other common word i.e. 'mangoes'.

Answer: D

Correct answer: Non-programmed decision

A programmed decision is one that recurs in a familiar form and can be settled by an established rule or procedure - reordering stock at a set level, for instance. An investment decision is the opposite: it is infrequent, involves large sums committed for years, faces conditions that have not arisen before, and requires judgement rather than a rule. Such decisions are taken at senior level for exactly that reason.

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: A

From 1, we have: number of employees who opted for VRS = 18% of 950 + 6% of 1100 = 171 + 66 = 237.

From 2, we cannot get the required answer until and unless the number of employees in age-group 51 to 56 and other age-groups is known.

Answer: D

Correct answer: Neither 1 or 2 is sufficient

Together the statements exclude schools D and F, leaving B, C and E as possibilities for T. Three candidates is not an answer, so neither statement alone nor both together determine where T studies.