A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.

But do you know how many of these numbers are prime?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

During which month do people sleep the least?

What has one letter and starts with an E?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?