25, 36, 49, 81, 121, 169, 225
Answer: Option A
Explanation:
The numbers are squares of odd natural numbers, starting from 5 up to 15.
So, 36 is wrong.
46080, 3840, 384, 48, 24, 2, 1
Answer: Option C
The terms are successively divided by 12, 10, 8, 6, ...etc.
So, 24 is wrong, it should be 8 (48/6 = 8).
6, 13, 18, 25, 30, 37, 40
Answer: Option D
The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5.
So, 40 is wrong.
36, 54, 18, 27, 9, 18.5, 4.5
Answer: Option B
56, 72, 90, 110, 132, 150
The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.
So, 150 is wrong.
