Find the next number of the series 3, 7, 12, 18, ?
Last updated Jun 13, 2026
Correct Answer:
Option B —
25
To find the next number in the series, let's look at how much the numbers increase from one step to the next:From 3 to 7, the difference is 4
From 7 to 12, the difference is 5
From 12 to 18, the difference is 6
The amount added to each number increases by one with each step (first four, then five, then six).
Following this pattern, the next difference must be 7
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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