Gcd

The positive divisors of 175, except 1, are arranged around a circle so that every pair of adjacent integers has a common factor greater than 1. What is the sum of the two integers adjacent to 7?

Find the HCF of 12 and 16...

• 2

• 4

• 6

• 8

Find the HCF of 8 and 24 ...

• 2

• 4

• 6

• 8

Find the HCF of 40 and 60?

• 10

• 20

• 30

• None of the above

Find the HCF of 45 and 60?

• 5

• 15

• 10

• 9

What is the highest common factor (HCF) of 20 and 10?

• 10

• 5

• 3

• 7

The greatest positive integer that is a divisor of both p and q is called the ____ of p and q.

Among all the common divisors of 30 and 96, the largest is 6 . So the _____ or greatest common factor, of 30 and 96 is 6

If a number is a divisor of both p and q, then we say that the number is a ____ of p and q.

Two numbers are relatively prime if their greatest common divisor is ___