Fill the blank space 4, 5, 12, 15, ...., 45, 108, 135

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18 Aug 2021 Fill the blank

Fill the blank space
4, 5, 12, 15, ...., 45, 108, 135

OPtion

2) 35
3) 36
4) 40
5) 45
6) 48
7) 55
8) 58
9) 60
10)none of these

Solution

Two series are there.
Starting from 4,5
Next numbers are 3 times of 4,5 .. i.e 12,15
Next numbers are 3 times of 12,15...i.e. 36,45
Next numbers are 3 times of 36,45.... 108,135

so blank space number is 36.

Correct Option: 3 Best Solution (5)