Find three whole, positive numbers that have the same answer when multiplied together as when added together.

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

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What does this Rebus Picture mean?

What is the next number in this series?

4,12,84,3612....

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?

Rearrange the letters in "new door" to make one word.

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Can you count the number of triangles inside a triangle?