TCS Company Numerical Ability Age Problem

Joe’s father will be twice his age 6 years from now. His mother was twice his age 2 years before. If Joe will be 24 two years from now, what is the difference between his father's and mother's age?

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TCS Other Question

Q0. For a real number x, int(x) denotes integral part of x, that is int(x) is the largest integer less than or equal to x. The value of int(1/2)+int(1/2+1/100)+int(1/2+2/100)......int(1/2+99/100)is

a)50
b)49
c)51
d)48
6^17 + 17^ 6