I asked a girl how old she was. She said, "In 2 years I will be twice as old as I was 5 years ago." How old is she?

I am a three digit number. My tens digit is five more than my ones digit. My hundreds digit is eight less than my tens digit. What number am I?

There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I am an odd number. Take away a letter and I become even. What number am I?

A set of natural numbers start with number .....

Arrange four nines to make it equal to 100.

There are two ducks in front of two other ducks. There are two ducks behind two other ducks. There are two ducks beside two other ducks. How many ducks are there?

How can you add eight 8's to get the number 1,000? (only use addition)

What do you get when you divide 30 by 1/2 and add 10?

The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be (there are 3 possible solutions)?

If you multiply this number by any other number, the answer will always be the same. What number is this?

0, 1, 2, 3, 4, ... are a set of ...... numbers.

Two fathers and two sons go fishing. Each of them catches one fish. So why do they bring home only three fish?