Question

Match the pair of numbers with their LCM.

• A. 18
• B. 36
• C. 30

Answer 1

$\left(i\right)$ Multiples of 5 = 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60...
Multiples of 6 = 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66...
$\therefore$ LCM = 30

$\left(ii\right)$ Mulltiples of 9 = 9, 18, 27, 36, 45, 54...
Multiples of 18 = 18, 36, 54...
$\therefore$ LCM = 18

$\left(iii\right)$ Multiples of 12 = 12, 24, 36, 48, 60, 72, 84...
Multiples of 18 = 18, 36, 54, 72, 90...
$\therefore$ LCM = 36