52, 51, 48, 43, 34, 27, 16
Answer: Option B
Explanation:
Subtract 1, 3, 5, 7, 9, 11 from successive numbers.
So, 34 is wrong.
4, 6, 8, 9, 10, 11, 12
Each number is a composite number except 11.
105, 85, 60, 30, 0, -45, -90
Answer: Option A
Subtract 20, 25, 30, 35, 40, 45 from successive numbers.
So, 0 is wrong.
5, 16, 6, 16, 7, 16, 9
Terms at odd places are 5, 6, 7, 8 etc. and each term at even place is 16.
So, 9 is wrong.
125, 127, 130, 135, 142, 153, 165
Answer: Option D
Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong.
