Question

3. Find the HCF of the two numbers.
a. 12 and 8
b. 18 and 42
C. 45 and 81​

Answer 1

Answer:

Step-by-step explanation:

a. Factors of 12,

3,2,2

Factors of 8,

2,2,2,2

So,the common factors of 12 & 8, is 2,2

∴ HCF is 2x2 = 4 (ANSWER)

b. Factors of 18

2,3,3

Factors of 42

2,3,7

So, the common factors of 18 & 42 is 2,3

∴ HCF is 2x3 = 6 (ANSWER)

c. Factors of 45

3,3,5

Factors of 81

3,3,3,3

So, the common factors of 45 & 81 is 3,3

∴ HCF is 3x3 = 9 (ANSWER)

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