Question

1. Find the HCF of the following by listing
factors.
b. 15, 51,65
a. 16, 24
C. 42, 54, 64​

Answer 1

Answer:

(b) 5 is the gcf of 15 and 65. gcf(15,65) = 5.

(a) Consider the highest common factor of 16 and 24 again. The common factors are 1, 2, 4 and 8. So, the highest common factor is 8.

(c) 2

Answer 2

Answer:

1. 1

2. 8

3. 2

Step-by-step explanation:

1. 15 =3×5

51 = 3×17

65 = 5×13

HCF = 1

2. 16 = 2×2×2×2

24 = 2×2×2×3

HCF = 8

3. 42 = 2×3×7

54 = 2×3×3×3

64 = 2×2×2×2×2×2

hope this answer will help you.