What is common among 11, 69, and 88?

Solve the puzzle by telling what does below picture means.

What makes this number unique: 8,549,176,320?

You can see three almost identical images below. Can you spot the odd one out from them?

What has hands, but can’t clap?

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.

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

How many squares, of any size, can you find on this chessboard which do not contain a Rook?

81 x 9 = 801. What must you do to make the this equation true?

Can you guess the name of the month by looking the below rebus ?