Question

Let's find the HCF and LCM of 12 and 18.

Let's list down the non-zero multiples of 12 from the very first multiple in increasing order.

Answer 1

Step-by-step explanation:

12 = 2 x 2 x 3

18 = 2 x 3 x 3

HCF = 2 x 3 = 6 There is only one 2 in 18 and only one 3 in 12.

LCM = 2 x 2 x 3 x 3 = 36 You need two 2’s and two 3’s to “cover” both 12 and 18.

Answer 2

Answer:

HCF of 12 and 18

12=2×2×3

18=2×3×3

HCF=2×3=6

LCM of 12 and 18= 2×2×3×3=36

the non-zero multiples of 12 from the very first multiple in increasing order= 24,36,48,60,72,84,96,108,120