why number 8549176320 is one of a kind?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

How is the moon similar to a dollar?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I can write cow in 13 letters.

Can You?

I look at you, you look at me, I raise my right, you raise your left. What am I?