Question

Which of the following numbers will replace the question mark (?) in the given series? 28, 29, 31, 35, 43, ?

• A. 55
• B. 59
• C. 61
• D. 53

Answer 1

Answer:

B. 59

The number that will replace the question mark to complete the series is 59.

Pattern Breakdown:

The series grows by adding consecutive powers of 2 (or doubling the difference each time):

• $28 + 1 = \mathbf{29}$ (adding $2^0$)

• $29 + 2 = \mathbf{31}$ (adding $2^1$)

• $31 + 4 = \mathbf{35}$ (adding $2^2$)

• $35 + 8 = \mathbf{43}$ (adding $2^3$)

• $43 + 16 = \mathbf{59}$ (adding $2^4$)