Find the next number in the series: 3, 9, 27, 81, ?
Difficulty: Medium
About this MCQ
This Medium Analytical Reasoning MCQ checks one syllabus fact.
The question is: “Find the next number in the series: 3, 9, 27, 81, ?”
The accepted answer is C. 243. “Find the next number in the series: 3, 9, 27, 81,” is answered by 243 (option C). Option A (“241”) does not match the stem; it is a near-miss used to catch incomplete recall of 243. Option B (“252”) does not match the stem; it is a near-miss used to catch incomplete recall of 243. Remaining alternatives (234) fall outside the same rule and should be eliminated once 243 is identified. Analytical Reasoning questions of this type reward precise definitions rather than approximate associations. Analytical Reasoning recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
- A. 241
Why not A: “241” is not correct. The accepted answer is C. 243. “Find the next number in the series: 3, 9, 27, 81,” is answered by 243 (option C). Option A (“241”) does not match the stem; it is a near-miss used to catch incomplete recall of 24
- B. 252
Why not B: “252” is not correct. The accepted answer is C. 243. “Find the next number in the series: 3, 9, 27, 81,” is answered by 243 (option C). Option A (“241”) does not match the stem; it is a near-miss used to catch incomplete recall of 24
- C. 243 ✓
- D. 234
Why not D: “234” is not correct. The accepted answer is C. 243. “Find the next number in the series: 3, 9, 27, 81,” is answered by 243 (option C). Option A (“241”) does not match the stem; it is a near-miss used to catch incomplete recall of 24
Correct answer
C. 243
Explanation
“Find the next number in the series: 3, 9, 27, 81,” is answered by 243 (option C). Option A (“241”) does not match the stem; it is a near-miss used to catch incomplete recall of 243. Option B (“252”) does not match the stem; it is a near-miss used to catch incomplete recall of 243. Remaining alternatives (234) fall outside the same rule and should be eliminated once 243 is identified. Analytical Reasoning questions of this type reward precise definitions rather than approximate associations. Analytical Reasoning recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
Source: Analytical Reasoning Official FPSC-Style Reference Guide
Tags: FPSC, logical reasoning, analytical reasoning, aptitude
Submitted by: MCQsHub Editorial
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