You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

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

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

Keyboard words are not in alphabetical order, Why?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Buy me, smell me or deliver me, I do not change.

Who am I?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?