..., -3, -2, -1, 0, 1, 2, 3, ... are a set of ..... .

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

A man dies of old age on his 25th birthday. How is this possible?

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

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?

What 3 positive numbers give the same result when multiplied together as when added together?

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

If you buy a rooster for the purpose of laying eggs and you expect to get three eggs each day for breakfast, how many eggs will you have after three weeks?

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?

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?

Arrange four nines to make it equal to 100.

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