Which rational number does not have its reciprocal?

• 1

• -1

• 0

Which rational number are equal to their reciprocals?

• (-1) and 0

• 0 and 1

• 1 and (-1)

How many rational numbers are there between two consective rational numbers?

• None

• Only one

• Infinitely many

What is the reciprocal of the reciprocal of a number?

• 0

• 1

• The Number itself

Which rational number is equal to its negative?

• -1

• 0

• 1