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Find the number that will replace the question mark in the series: 4, 10, 20, 34,…

Paper 1 · Paper 1 UGC NET June 2024 Re-Exam (30.08.2024) Shift-I
Find the number that will replace the question mark in the series: 4, 10, 20, 34, 52, 74, ?
A98
B102
C97
D100 ✓ Correct
Correct answer: (D) 100 — The missing number is 100, so that is the answer.
Explanation
The missing number is 100, so that is the answer.
The differences between terms are 6, 10, 14, 18 and 22.
These differences increase by 4 each time.
The next difference is 22 plus 4, which is 26.
So the next term is 74 plus 26.
That equals 100.

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