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Introduction to Rational Numbers

The number wh...

Question

The number which has no reciprocal is

A

2

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B

1

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C

-1

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D

0

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Solution

The correct option is D 0
Recall that division by zero is undefined. That is, we cannot have zero in the denominator of a fraction. Therefore, while we could write 0 as 0 / 1, we could not "flip" this fraction since that would cause division by zero. Zero has no reciprocal
Then answer is 0

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