− 15 51 is a multiplicative inverse of − 17 5 . Options: A . &nbspTrue B . &nbspFalse C . &nbsp7 D . &nbsp711

Answer: Option A : A Multiplicative inverse of a b is c d if a b × c d = 1 . Now, − 15 51 × − 17 5 = 3 3 = 1

−1551 is a multiplicative inverse of −175.

Question

\frac{- 15}{51}

is a multiplicative inverse of

\frac{- 17}{5}

Options:

A . True

B . False

C . 7

D . 711

Answer: Option A
:
A
Multiplicative inverse of

\frac{a}{b}

\frac{c}{d}

\frac{a}{b} \times \frac{c}{d} = 1

.
Now,

\frac{- 15}{51} \times \frac{- 17}{5} = \frac{3}{3} = 1

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