Correct Answer & Explanation
Option C
• The terms form two alternating series:
Upper/Odd-positioned series (1st, 3rd, 5th, 7th...): 2, 1, 4, 8
Lower/Even-positioned series (2nd, 4th, 6th, 8th, 9th/target in 3-part steps):
Grouping in pairs or alternate streams:
Stream 1 (Positions 2, 4, 6, 8): 2 → 4 → 6 → 8 (+2 at each step)
Stream 2 (Positions 1, 5, 7, 9): 2 → 4 → 8 → ? (multiplying by 2 each step)
2 × 2 = 4
4 × 2 = 8
8 × 2 = 16
• Hence, the required term is 16.