Question

Q - Which rational number has no multiplicative inverse ?​

Answer 1

Answer:

Zero

Step-by-step explanation:

What is Rational numbers

Rational numbers are those no. which can be written as

$\frac{p}{q}$

form where q is not equal to zero and p and q both belongs to real no.

What is real no.

All no. except

$\sqrt{ - number}$

are called real no.

Point

Hence 0 is a real no. and can also be written as

$\frac{p}{q} \: form.$

So 0 is a rational no.

Answer

0 is the no. which don't have any multiplicative inverse.

For example

$0 \: can \: not \: be \: written \: as \: \frac{1}{0}$