Which rational number are equal to their reciprocals?
(-1) and 0
0 and 1
1 and (-1)
C.
1 and (-1)
How many rational numbers are there between two consective rational numbers?
None
Only one
Infinitely many
Which rational number is called identity element for the addition of the rational numbers?
0
1
–1
What is the sum of a rational number and its additive inverse?
0
1
The rational number itself