Question

For any integers 'a' and 'b' with HCF (a,b)= 1, what is HCF (a + b, a-b) equal to?

A) It is always 1

B) It is always 2

C) Either 1 or 2

D) None of the above ​

Answer 1

Answer:

C

Step-by-step explanation:

Example 1) HCF(7,3) =1

Then HCF (7+3, 7-3) =2

Example 2) HCF(7,4) =1

Then HCF(7+4,7-4) =1

Then Either 1 or 2