Question

In the following question, select the missing number from the given series. 1, 4, 15, 64, ?

• A. 285
• B. 315
• C. 325
• D. 375

Answer 1

Answer:

C. 325

1 × 2 + 2 = 4 4 × 3 + 3 = 15 15 × 4 + 4 = 64 64 × 5 + 5 = 325