A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What month of the year has 28 days?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What is the riddle which can be asked all day with a different correct answer each time.

What does Alexander the Great and Winnie the Pooh have in common?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

What does below Rebus say?

XLR8

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1