If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What am I?

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.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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

Solve below rebus puzzle?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?

I am quite hot but become too cold if you remove the first two letters. What am I?