Missing Numbers Quiz Set 027 | Missing Numbers Type of Questions for Aptitude and Reasoning Exams Set 27 | Online self tests for IBPS, Clerical, SO, SSC, SSB, NTSE, Mental Ability Exams

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Question 1

What is missing?

²⁰⁄₁₃

²¹⁄₂₅

¹⁵⁄₁₆

¹⁷⁄₁₈

Soln.
Ans: c

¹⁵⁄₁₆. In the top circle, the progression is plus 1, minus 2 plus 3, minus 4 and so on. In the bottom circle, the progression is minus 1, plus 2, minus 3, plus 4 and so on.

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Question 2

One term in the number series is wrong. Find out the wrong term.

4, 7, 13, 25, 49, 97, 153

153

Soln.
Ans: d

4 + 3 gives 7, 7 + (2 X 3) gives 13, 13 + (2 X 3 X 2) gives 25, 25 + (2 X 3 X 2 X 2) gives 49, 49 + (2 X 3 X 2 X 2 X 2) gives 97, but 97 + (2 X 3 X 2 X 2 X 2 X 2) is ≠ 153.

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