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What is the HCF of 2 and 4?

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The highest common factor of 2 and 4 is 2.

The number 2 is a factor of 4.
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What 2 numbers have a HCF of 6 and an LCM of 72 and how?

In these types of problems, the numbers can also be the answer. 6  and 72 have a GCF of 6 and an LCM of 72. Since the product of the  GCF and LCM of two numbers is the same

By Euclid division lemma find hcf of 2 7 4 1 7 0 and 17017?

The idea is to divide 274170 by 17017, and get the remainder. In this case, the answer is 1898. This means that the greatest common factor of 274170 and 17017 is the same as t

What two positive numbers have a HCF of 2 and a LCM of 30?

In order to have a LCM of 30, the two numbers must only have unique  primes that multiply to give 30. 30 is the product of 2, 3 and 5.  To have an HCF of 2, the two numbers

What is the HCF of 4 and 9?

The HCF is 1.

Is the HCF of 140 and 210 2?

No. The prime factors of 140 are 2,2,5 and 7 The prime factors of 210 are 2,3,5 and 7 The common prime factors are 2,5 and 7 Thus the HCF is 2x5x7, or 70.