TCS Company Numerical Ability Age Problem

After 6 years Raju's fathers age will twice of the Raju's age 2 years ago.His mothers age was twice that of Raju's age. Sum of the age of their parents.

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TCS Other Question

what is the probability of getting atleast 50 heads while tossing 99 coins? 1,5,6,25,26,30,31,125,126...........what is the value of 30th term in the given series?