What comes next in series? 7, 11, 19, ........?
- 27
- 31
- 35
- 37
Explanation
Check the difference between terms:
11 - 7 = 4
19 - 11 = 8
So, the pattern in differences: +4, +8, +12...
Next difference: +16
So, 19 + 16 = 35
Oops! That gives 35, not 31. Let's try again:
Actually:
7 → 11 → 19 → ?
Differences:
11 - 7 = 4
19 - 11 = 8
So next difference = +12
19 + 12 = 31
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