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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 each sequence:
10, 14, 28, 32, 64, 68, 132
10, 14, 28, 32, 64, 68, 132
A. 28
B. 32
C. 68
D. 132