If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

What seven-letter word has hundreds of letters in it?

Why do we preferably have round manhole covers and not square ones?

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?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

I am an odd number. Take away a letter and I become even. What number am I?

Can you count the number of triangles in the given figure?

Aman has 1.15 rupees in his pocket. There are a total of 6 coins in his pocket.

When his friend asked him for a change, he could not give change for a rupee and five paisa.

Can you tell which coins he has?