Rani's age was a square of a number, last year and it will be cube of a number next year. Age of Rani is:

Find the set of numbers which is most like to the set (64,216,125):

Which of the following can replace x in 4/x = x/100?

Complete the series. 

 21, 25, 33, 49, 81,

Interest on Rs.1,000 for 146 days at the rate of 10% per annum:

2, 6, 15, 34, ?