Which of the following numbers has both 7 and 5 as factors?

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Solution

The correct option is D
70

Factors of 55 are: 1, 5, 11 and 55
Factors of 28 are: 1, 2, 4, 7, 14 and 28
Factors of 30 are: 1, 2, 3, 5, 6, 10, 15 and 30
Factors of 70 are: 1, 2, 5, 7, 10, 14, 35 and 70
From this we can see that
70 has both 7 and 5 as factors.

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Which of the following numbers has both 7 and 5 as factors?

The correct option is D 70 Factors of 55 are: 1, 5, 11 and 55 Factors of 28 are: 1, 2, 4, 7, 14 and 28 Factors of 30 are: 1, 2, 3, 5, 6, 10, 15 and 30 Factors of 70 are: 1, 2, 5, 7, 10, 14, 35 and 70 From this we can see that 70 has both 7 and 5 as factors.

The correct option is D
70

Factors of 55 are: 1, 5, 11 and 55
Factors of 28 are: 1, 2, 4, 7, 14 and 28
Factors of 30 are: 1, 2, 3, 5, 6, 10, 15 and 30
Factors of 70 are: 1, 2, 5, 7, 10, 14, 35 and 70
From this we can see that
70 has both 7 and 5 as factors.