2, 3, 5, 9, 17, _ What is the next number in the sequence?

I look at you, you look at me I raise my right, you raise your left. What am I?

No matter how little or how much you use me, you change me every month. What am I?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

I have branches, but no fruit, trunk or leaves. What am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

Can you start the fire using two pieces of wood?