What comes next: 3, 6, 18, 108, ?

Question

What comes next: 3, 6, 18, 108, ?

1. A. 1290
2. B. 1944 (Correct answer)
3. C. 648
4. D. 432

Correct Answer

Option B — 1944

Detailed Solution & Explanation

The correct answer is 1944.

Key Points

• Check how each term relates to its neighbours: 3 × 6 = 18 (third term), 6 × 18 = 108 (fourth term).
• Each term is the product of the two terms before it.
• So the next term is 18 × 108 = 1944.
• A quick tell: when the jumps between terms grow explosively (3 → 6 → 18 → 108), an additive rule can't keep up — test multiplicative rules, starting with 'product of previous two'.