Question

Product of 3ab and 1/3 a b = _____​

Answer 1

$\text{Product of \: (3ab) \: and} \rm \: \: \bigg( \frac{1}{3ab} \bigg)$

→→

$\bf\cancel{3ab} \times \frac{1}{ \cancel{3ab}} \: \: = \red 1$

Thus,

• It is concluded that product of a number and its reciprocal is always 1