- A8
- B3
- C4
- D5
Step-by-Step Solution
Every rational except 0 has a reciprocal. Among the five, 0 has none; 1, -1, and each have one. So 4 numbers have a multiplicative inverse.
Answer: C) 4
How many of the following five rational numbers have a multiplicative inverse: 0, 1, -1, ?
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