Question

A person is riding a bicycle at the speed of $17.6$ metre per second. Round this speed up to nearest natural number and find it's prime factorisation.

• A. $2\times 3\times 3$
• B. $2\times 2\times 2\times 2$
• C. $17\times 1$
• D. $2\times 2\times 5$

Answer 1

The correct option is A $2\times 3\times 3$

On rounding up the speed to nearest natural number we get $18$ metre per second speed.
Now, Prime factorisation of $18$ will be,
$18=2\times 3\times 3$.