When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Find the next number in the sequence

5 12 24 36 ?

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

Solve the rebus riddle in the picture below.

What does this rebus means ?

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

You need to arrange three 7 and mathematical symbols to form number 1?

I can write cow in 13 letters.

Can You?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?