Question 3

Find the LCM and HCF of the following integers by applying the prime factorisation method.

(ii) 17, 23 and 29

Step 1: Prime factorisation

17 = 17
23 = 23
29 = 29

Step 2: HCF

There is no common prime factor.
HCF = 1

Step 3: LCM

LCM = 17 × 23 × 29
LCM = 11339