Multiple choice

Directions: Find the missing term of the given series. 8, 9, 15, 17, ...., 9, 8

  1. 12

  2. 10

  3. 17

  4. 15

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series is 8, 9, 15, 17, x, 9, 8. This appears to be two interleaved series: 8, 15, x, 8 and 9, 17, 9. This does not form a clear pattern. However, looking at the sequence 8, 9, 15, 17, 15, 9, 8, it is a symmetric sequence.