Question

Gopal's age is cube of a number. It was square of a number 2 years ago. What is his age?​

Answer 1

Answer:

3^3 = 27

Age of Gopal before 2 years= 25,which is the square of 5.

Therefore present age of Gopal is 27.

Answer 2

Gopal's age is 27 years old.

* Gopal's age is cube of a number so it can be:

1, 8,27,64, and so on

* Also 2 years ago it was the square of a number so it can be:

1, 4,9, 16, 25 and so on

Now on combining both the numbers are: 1, 4,8, 9, 16, 25,27, 36, 49, 64,.......

We need a difference of 2 between any two numbers which is seen in case of 25 and 27.

To verify:

27 is the cube of 3 and 2 years ago it was 25 which is the square of 5.