A) Every point on the number line represents a rational number.
B) The product of a rational number and its reciprocal is 0.
C) \[{{(17\times 12)}^{-1}}={{17}^{-1}}\times 12\]
D) Reciprocal of \[\frac{1}{a},a\ne 0\] is a.
Correct Answer: D
Solution :
[a] Every point on the number line is not only rational number, it can be irrational number also. [b] The product of a rational number and its reciprocal is 1. [c] \[{{(17\times 12)}^{-1}}=\frac{1}{(17\times 12)}={{17}^{-1}}\times {{12}^{-1}}\] [d] Reciprocal of \[\frac{1}{a},a\ne 0\] is a.
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