Book Online Demo

Check Your IQ

Courses

Under which property multiplication used in $\frac{- 19}{29} \times \frac{29}{- 19} = 1$ ?

see full answer

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*

An Intiative by Sri Chaitanya

Commutative Property

Multiplicative inverse

Associative Property

Identity Property

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

It is given the expression is

\frac{- 19}{29} \times \frac{29}{- 19}

.
We know that multiplicative inverse for any number

n

\frac{1}{n}

where

n \neq 0 .

The product of a number and its multiplicative inverse is

1

.
Let us take a number

n = \frac{- 19}{29}

.
From definition the multiplicative inverse of

n

is,

\frac{1}{n} = \frac{29}{- 19}

Now consider the product of

n

and

\frac{1}{n}

as follows,

\frac{- 19}{29} \times \frac{29}{- 19} = 1

Hence, multiplicative inverse property is used in

\frac{- 19}{29} \times \frac{29}{- 19} = 1

.
Therefore, the correct option is 2.

Watch 3-min video & get full concept clarity