Complete the sequence...7, 10, 8, 11, 9, ?
Show answer & explanation
Correct answer: B
Explanation
7, 10, 8, 11, 9, ?
Pattern:
7 → 10 (+3)
10 → 8 (−2)
8 → 11 (+3)
11 → 9 (−2)
This alternating pattern is: +3, −2, +3, −2, +3...
So next:
9 + 3 = 12
Correct answer: 12