10+10 and 11+11 can give you the same answer.

Explain how?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Find the value of "?" in the ball picture Riddle below:

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

what does this picture(rebus) riddle means ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

How can you take 2 from 5 and leave 4?

How do you go from 98 to 720 using just one letter?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

Can you count the number of triangles in the picture below?