Question

What should come in place of the question mark (?) in the given series? 34 51 85 102 136 ?

• A. 153
• B. 146
• C. 157
• D. 142

Answer 1

Answer:

A. 153

Series:

34, 51, 85, 102, 136, ?

Observe the pattern:

• 34 + 17 = 51

• 51 + 34 = 85

• 85 + 17 = 102

• 102 + 34 = 136

So the additions alternate between +17, +34.

Next term:

136 + 17 = 153

Answer: 153