1.  Choose that set of numbers from the four alternative sets, that is similar to the given set.
Given set : (81, 77, 69)

A. (56, 52, 44)
B. (64, 61, 53)
C. (75, 71, 60)
D. (92, 88, 79)

Answer: Option A

Explanation:

In each set, 2nd number = (1st number - 4) and 3rd number = (2nd number - 8)