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Question
WHat is the highest common factor that can divide 8, 16, 24, 32 and 40 completely?
WHat is the highest common factor that can divide 8, 16, 24, 32 and 40 completely?
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Solution
The correct option is A 8
Factors of 8: 1, 2, 4 and 8
Factors of 16: 1, 2, 4, 8 and 16
Factors of 24: 1, 2, 3, 4, 6, 8, 12 and 24
Factors of 32: 1, 2, 4, 8, 16 and 32
Factors of 40: 1, 2, 4, 5, 8, 10, 20 and 40
The common factors are: 1, 2, 4 and 8
and, the HCF is 8.
Factors of 8: 1, 2, 4 and 8
Factors of 16: 1, 2, 4, 8 and 16
Factors of 24: 1, 2, 3, 4, 6, 8, 12 and 24
Factors of 32: 1, 2, 4, 8, 16 and 32
Factors of 40: 1, 2, 4, 5, 8, 10, 20 and 40
The common factors are: 1, 2, 4 and 8
and, the HCF is 8.
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