Question

9, 15, 27, 45, 69,? Find the missing

Answer 1

99 , 135 these are the missing number

Answer 2

Given,

Series: 9, 15, 27, 45, 69, ?

To find,

Missing number.

Solution,

To find the missing number that will replace the question mark, let's first observe the pattern in the series.

So the given series is:

9, 15, 27, 45, 69.

It can be observed that the successor numbers are increasing in multiples of 6. Thus,

9 + (6×1) = 9 + 6 = 15,

15 + (6×2) = 15 + 12 = 27,

27 + (6×3) = 27 + 18 = 45,

45 + (6×4) = 45 + 24 = 69.

So, the next number should be,

69 + (6×5) = 69 + 30 = 99.

Therefore, the missing number will be 99.