Hard
Find the LCM of 7 and 13 given that their HCF is 1.
Explanation
Explanation
For any two numbers, HCF × LCM = product of the numbers. So LCM = (7 × 13) ÷ HCF = 91 ÷ 1 = 91.
PRO TIP
Re-check your working by substituting the answer back into the original question.