Question

:-How many of the following groups of two numbers are co-primes' ?
3 and 17, 4 and 25, 6 and 37
15 and 69, 13 and 57, 7 and 84
5 and 49, 6 and 82, 9 and 87
12 and 57, 8 and 19, 10 and 79
9
6
o 7
8​

Answer 1

Step-by-step explanation:

co prime-the two numbers hcf is 1..

There are 6 co primes..

3,17

4,25

6,37

13,57

5,49

10,79

these are hcf is 1..

take 15 and 69 these numbers are divisible by 3..so this is not a co prime number