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Question
Which of the following rational numbers is equal to its reciprocal?
Options
1
2
`1/2`
0
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Solution
1
Explanation:
a. Reciprocal of 1 is `1/1 = 1`
b. Reciprocal of 2 is `1/2 ≠ 2`
c. Reciprocal of `1/2` is `2 ≠ 1/2`
d. Reciprocal of 0 is `1/0` = not defined ≠ 0
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