Question

What should come in place of the question mark (?) in the given series? 29, 33, 41, 53, 69, ?

• A. 89
• B. 85
• C. 91
• D. 87

Answer 1

Answer:

A. 89

The next number in the series is 89.

The series increases by consecutive multiples of 4 ($4, 8, 12, 16, 20$):

• $29 + \mathbf{4} = 33$

• $33 + \mathbf{8} = 41$

• $41 + \mathbf{12} = 53$

• $53 + \mathbf{16} = 69$

• $69 + \mathbf{20} = \mathbf{89}$