Find the next number in the series: 7, 21, 63, 189, ?
Difficulty: Medium
About this MCQ
This Medium Analytical Reasoning MCQ checks one syllabus fact.
The question is: “Find the next number in the series: 7, 21, 63, 189, ?”
The accepted answer is A. 567. “Find the next number in the series: 7, 21, 63, 189,” is answered by 567 (option A). Option B (“560”) does not match the stem; it is a near-miss used to catch incomplete recall of 567. Option C (“550”) does not match the stem; it is a near-miss used to catch incomplete recall of 567. Remaining alternatives (540) fall outside the same rule and should be eliminated once 567 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. 567 ✓
- B. 560
Why not B: “560” is not correct. The accepted answer is A. 567. “Find the next number in the series: 7, 21, 63, 189,” is answered by 567 (option A). Option B (“560”) does not match the stem; it is a near-miss used to catch incomplete recall of
- C. 550
Why not C: “550” is not correct. The accepted answer is A. 567. “Find the next number in the series: 7, 21, 63, 189,” is answered by 567 (option A). Option B (“560”) does not match the stem; it is a near-miss used to catch incomplete recall of
- D. 540
Why not D: “540” is not correct. The accepted answer is A. 567. “Find the next number in the series: 7, 21, 63, 189,” is answered by 567 (option A). Option B (“560”) does not match the stem; it is a near-miss used to catch incomplete recall of
Correct answer
A. 567
Explanation
“Find the next number in the series: 7, 21, 63, 189,” is answered by 567 (option A). Option B (“560”) does not match the stem; it is a near-miss used to catch incomplete recall of 567. Option C (“550”) does not match the stem; it is a near-miss used to catch incomplete recall of 567. Remaining alternatives (540) fall outside the same rule and should be eliminated once 567 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/NTS/PPSC-Style Reference Guide
Tags: FPSC, PPSC, logical reasoning, analytical reasoning, aptitude, NTS
Submitted by: MCQsHub Editorial
Related MCQs
- Find the next number in the series: 2, 3, 7, 8, 12, 13, ?
- Find the next letter in the series: A, D, G, J, ?
- Find the next number in the series: 5, 15, 45, 135, ?
- Find the next letter in the series: Y, W, U, S, ?
- Find the next number in the series: 6, 11, 17, 24, 32, ?
- Find the next letter in the series: C, F, I, L, ?