data sufficiency reasoning mcq Model Questions & Answers, Practice Test for ssc chsl tier 1 2024

Directions:

Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question.

Question :11

Who is to the immediate right of P among five persons P, Q, R, S and T facing North?
I. R is third to the left of Q and P is second to the right of R.
II. Q is to the immediate left of T who is second to the right of P.

Answer: (c)

From I, we have the order: R, _, P, Q. From II, we have the order : P, Q, T. Clearly, each of the above two orders indicates that Q is to the immediate right of P.

Question :12

Five friends P, Q, R, S and T are standing in a row facing East. Who is standing at the extreme right end?
I. Only P is between S and T. R is to the immediate right of T.
II. R is between T and Q.

Answer: (e)

We can find using both statement together

Question :13

In a row of five children A, B, C, D and E, who is standing in the middle?
I. D is to the immediate right of E and B is to the immediate left of E.
II. B is at the extreme left of the row.

Answer: (e)

From I, we have the order: B, E, D. From II, B is at the extreme left of the row. Thus, considering both I and II, we conclude that among the five children, D is the third and hence the middle child in the row.

Question :14

P,Q,R,S and T are sitting around a circle facing towards its centre. Who is second to the right of P?
I. R is to the immediate left of T and second to the right of S.
II. Q is to the immediate right of S and third to the left of P.

Answer: (b)

From I, we have

Thus, either Q or T is second to the right of P.

From II, we have

Clearly, Q is second to the right of P.

Question :15

P, Q, R and S are sitting around a circle facing at the centre. Who is to the immediate right of Q?
I. R is between P and S.
II. S is to the immediate right of R.

Answer: (e)

From I, we have :

From II, we have :

Combining the above two, we have:

Clearly, P is to the immediate right of Q.

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