Question

12,15,21 Lcm and hcf

Answer 1

Answer:

your L.C.M = 420

H.C.F of 12 = 12; 2×2×3

H.C.F of 15 = 15; 3×5

H.C.F of 21 = 21; 3×7

Answer 2

Answer:

YOUR ANSWER MIGHT BE LIKE THIS:

Step-by-step explanation:

12=2×2×3

15=3×5

21=3×7

HCF=3

LCM=2×2×3×5×7

=430

HOPE IT HELPED YOU!!