Complete series: 3, 4, 7, 8, 11, 12. X. ......?
- 10
- 12
- 14
- 15
Explanation
The given sequence is:
3, 4, 7, 8, 11, 12
Form the differences between two consecutive numbers in the sequence as follows:
4 - 3 = 1
7 - 4 = 3
8 - 7 = 1
11 - 8 = 3
12 - 11 = 1
X- 12 = 3
= 15
Last updated by NA on 06-11-2026
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