
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:- The smallest number that must be added to 803642 in order to obtain a multiple of 11 is
A. 1
B. 4
C. 7
D. 9