Two statements S1 and S2 are given below with regard to four numbers P, Q, R, and S followed by a Question: 1. S1: R is greater than P as well as Q. 2. S2: S is not the largest one. Among four numbers P, Q, R, and S which one is the largest? Which one of the following is correct in respect of the above statements and the Question?

IAS 2020 — CSAT Reasoning

2020mcqmedium

Two statements S1 and S2 are given below with regard to four numbers P, Q, R, and S followed by a Question:

S1: R is greater than P as well as Q.
S2: S is not the largest one.

Among four numbers P, Q, R, and S which one is the largest?

Which one of the following is correct in respect of the above statements and the Question?

Official previous-year question

Verified 2 Aug 2026.

Options

AS1 alone is sufficient to answer the question.
BS2 alone is sufficient to answer the question.
CS1 and S2 together are sufficient to answer the question, but neither S1 alone nor S2 alone is sufficient to answer the question.
DS1 and S2 together are not sufficient to answer the question.

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Solution

Correct Option (3)

Statements S1 and S2 together are sufficient to answer the question. From S1, it is established that R is greater than both P and Q (R > P and R > Q). From S2, it is stated that S is not the largest number among the four. Combining these, if S is not the largest, then the largest number must be one of P, Q, or R. Since R is greater than both P and Q, R is definitively the largest among P, Q, and R. Therefore, R is the largest among P, Q, R, and S.

Incorrect Options:

S1 alone is not sufficient because while it establishes R > P and R > Q, it provides no information about the relationship between R and S. Thus, the largest number could be R or S.

S2 alone is not sufficient because it only states that S is not the largest. This leaves P, Q, or R as potential largest numbers, without providing any means to determine which one among them is the largest.

The combination of S1 and S2 is sufficient, as explained above. Therefore, the option stating that S1 and S2 together are not sufficient is incorrect.

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Correct Option (3)

Incorrect Options:

S1 alone is not sufficient because while it establishes R > P and R > Q, it provides no information about the relationship between R and S. Thus, the largest number could be R or S.

The combination of S1 and S2 is sufficient, as explained above. Therefore, the option stating that S1 and S2 together are not sufficient is incorrect.

IAS 2020 — CSAT Reasoning

Options

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Solution

Correct Option (3)

Incorrect Options:

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Options

Did you get this right?

Solution

Correct Option (3)

Incorrect Options:

Your note

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More IAS Reasoning questions

Other CSAT topics for IAS

Comprehension

Maths

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