The multiplicative inverse of

Question:

The multiplicative inverse of $-1 \frac{1}{7}$ is

(a) $8 / 7$

(b) $-8 / 7$

(c) $7 / 8$

(d) $7 /-8$

Solution:

(d) $7 /-8$

$=-1 \frac{1}{7}=-8 / 7$

$=7 /-8$                           $[\because$ reciprocal $]$

 

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