Instructions

What should come in place of question mark in the following series ?

Question 186

23 33 46 62 81 103 (?)

Solution

Clearly ,

33 - 23 = 10

46 - 23 = 13

62 - 46 = 16

81 - 62 = 19

103 - 81 = 22

Each difference value is increasing by +3 . Hence , the next difference must be 22+3 = 25.
Hence, 103 + 25 = 128

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