question_answer 18)

                If the product of two whole numbers is 1, can we say that one or both of them will be 1? Justify through examples.

Answer:

                We know that, on multiplying any whole number by 1, we get the same whole number. i.e. \[5\times 1=5;20\times 1=20;1\times 0=0;1\times 1=1\] Hence, the product of two whole numbers will be equal to 1, if and only if both whole numbers are 1.