Question

Closure property is satisfied by whole numbers with respect to which of these operations?

• A. Addition and Subtraction
• B. Addition and Division
• C. Addition and Multiplication
• D. Multiplication and Division

Answer 1

The correct option is C Addition and Multiplication

Addition and multiplication of whole numbers satisfy closure property.

Eg. $20+3=23$ Here both the addends and the sum are whole numbers.
$2\times 3=6$ . Here the multiplier, the multiplicand and the product all are whole numbers.

Whole numbers are not closed under subtraction and division.
Eg. $3-4=-1$ (while 3 and 4 are whole numbers, -1 is not a whole number).

$3÷2=1.5$ (while 3 and 2 are whole numbers, 1.5 is not a whole number).