Question

different rectangle/rectangles can be made by rearranging a set of $16$ square crackers.

• A. $2$
• B. $3$
• C. $4$
• D. $5$

Answer 1

The correct option is B $3$

$3$ rectangles can be formed from a set of $16$ square crackers. This is because $16$ is a composite number and a perfect square.
$\therefore$ It can be represented as a product of two natural numbers in the following ways:
$16=(1\times 16);16=(2\times 8);16=(4\times 4)$

Hence $3$ different rectangles can be formed.