Paper 1 · Mathematical Reasoning and Aptitude
UGC NET December 2021 June 2022 (29.09.2022) Shift-II
Find the next term in the series: 1, 2, 4, 6, 7, 18, 10, 54, ?
A162
B13 ✓ Correct
C64
D72
Correct answer: (B) 13 — The answer is 13.
Explanation
★The answer is 13.
★The series interleaves two patterns in alternate positions.
★The terms in the odd positions rise by 3 each time, giving 1, 4, 7, 10 and then 13.
★The terms in the even positions are multiplied by 3 each time, giving 2, 6, 18 and 54.
★The missing term is in an odd position, so it continues 1, 4, 7, 10 with 13.
★The other options do not fit this pattern.
★So the answer is 13.
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