D) 11780 13. Ram's age was square of number last year and it will be cube of a number next year. How long must he wait before his age is again a cube of a number?
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Ram's current age is 26
so previous year his age was 25 which is square of 5
next year his age will be 27 which os cube of 3
The age when again his age will be a cube of any number is 64 (cube of 4)
so no. of years between 26 and 64=38(Ans)
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