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BECE Mathematics 2021 Paper

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Question : 22

Total: 40

What is the Highest Common Factor (HCF) of 24, 32 and 64?

4
6
8
16

Solution:

Concept:

The HCF is the largest number that divides all the given numbers exactly.

Explanation:

List all factors of

24

,

32

, and

64

.

Factors of

24

:

1, 2, 3, 4, 6, 8, 12, 24

Factors of

32

:

1, 2, 4, 8, 16, 32

Factors of

64

:

1, 2, 4, 8, 16, 32, 64

The common factors are

1, 2, 4, 8

.

Among these, the largest is

8

.

Answer:

8

(Option C)

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