
Ques:- Five years ago, the total of the ages of a father and his son was 40 years. The ratio of their present ages is 4 : 1. What is the present age of the father?
A. 20 years
B. 30 years
C. 40 years
D. 50 years
Ques:- Find out the wrong number in the series:
7, 8, 18, 57, 228, 1165, 6996
7, 8, 18, 57, 228, 1165, 6996
A. 228
B. 57
C. 18
D. 8