Question

2 and 4 how to write Find, by inspection, the HCF of the following pairs of numbers

Answer 1

Answer:

Consider the numbers 12 and 15:

The factors of 12 are : 1, 2, 3, 4, 6, 12.

The factors of 15 are : 1, 3, 5, 15.

1 and 3 are the only common factors (numbers which are factors of both 12 and 15).

Therefore, the highest common factor of 12 and 15 is 3.

Answer 2

Answer:

the HCF of 2 and 4 is 2, because 2 is the number which is common to both 2 and 4.

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