Complete the identity elements

Exercise and reference answers

Missing parts

1. Answer

   0

   Choices

   1. 0
   2. 1
   3. −1

2. Answer

   1

   Choices

   1. 0
   2. 1
   3. 10

Complete the statement

The rational number {0} is the additive identity, and the rational number {1} is the multiplicative identity.

Explanation