Prove that twice of ten is the same as twice of eleven.

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Who can jump higher than a Mountain?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

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

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?