Question

what is the hcf of 55 and 90

Answer 1

1, 2, 3, 4, 6, 8, 12 and 24. and that the factors of 40 are. 1, 2, 4, 5, 8, 10, 20 and 40. The numbers 1, 2, 4 and 8 appear in both lists, so they are known as the common factors of 24 and 40. The number 8 is the highest of them, and it is called the highest common factor (HCF).

Answer 2

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