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 a given series.
124, 133, 142, 152, 160
124, 133, 142, 152, 160
A. 133
B. 142
C. 152
D. 160
Ques:- The difference between the local value and face value of 7 in the numeral 657903 is
A. 901
B. 903
C. 6993
D. 7896