1.  Choose one number which is similar to the numbers in the given set.
Given set : 538, 725, 813

A. 814
B. 712
C. 328
D. 219

Answer: Option D

Explanation:

In all the numbers, (1st digit + 3rd digit) - middle digit = 10. Thus, 5 + 8 - 3 = 10, 7 + 5 - 2 = 10, 8 + 3 - 1 = 10.