Question

9, 10, 22, 69, ?

• A. 350
• B. 280
• C. 325
• D. 245

Answer 1

Answer:

B. 280

First term = 9 2nd term = first x 1 + 1 = 9 x 1 + 1 = 10 3rd term = 2nd x 2 + 2 = 10 x 2 + 2 = 22 4th term = 3rd x 3 + 3 = 22 x 3 + 3 = 69 5th term = 4th x 4 + 4 = 69 x 4 + 4 = 280