Question

If $a$ and $b$ are any two whole numbers, then the result of ......... is always a whole number.

• A. $a+b$ and $a-b$
• B. $a+b$ and $a\times b$
• C. $a\times b$ and $a÷b$
• D. $a-b$ and $a÷b$

Answer 1

Answer: (B)

$a+b$ and $a\times b$

Whole numbers are closed under addition and multiplication because when any two whole numbers are added or multiplied the result is also a whole number.