Multiple choice Directions: Find the missing term of the given series. 8, 9, 15, 17, ...., 9, 8 12 10 17 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.