The one number that has no reciprocal at all is:
ANine
BFive
CZero
DFour
Answer & Solution
Correct answer: C. Zero
1. A number times its reciprocal must give one.
2. Nothing multiplied by this number can give one.
3. That number is zero.
_Source: OpenStax Prealgebra 2e, Chapter 4, Fractions._
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