Question

a 12, 16
1 Find the HCF of the following numbers by prime factorisation.
/ 54,72 c 30,96
2 Find the HCF of the following groups of numbers using the method of division by common factors.
a 12, 18, 24
b 28, 35, 49
32, 64, 96, 128 d 70, 105, 175
d 128, 32 y 240, 135 85, 136 : 242,88 X 333, 185​

Answer 1

Answer:

1: (54, 72)=18 (30, 90)=30

2: highest common factor of 12, 18, 24 is 2×3=6

highest common factor of 28, 35, 49 is 7