Which number will replace the question mark (?) in the series: 7, 14, 33, 70, 131, ?

Question

Which number will replace the question mark (?) in the series: 7, 14, 33, 70, 131, ?

1. A. 190
2. B. 222 (Correct answer)
3. C. 218
4. D. 131

Correct Answer

Option B — 222

Detailed Solution & Explanation

The correct answer is 222.

Key Points

• Differences: 7, 19, 37, 61. Second differences: 12, 18, 24 (increasing by 6 each time).
• Next second difference: 30. Next first difference: 61+30=91. Answer: 131+91 = 222.