If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What does it mean?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

In the image below, can you find the value of an angle(y)

Can you find the six hidden animals in the picture below?

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.