Answer:
The correct option is B. 60 and 77
Step-by-step explanation:
Consider the provided information.
We need to find which pair is relatively prime.
Relatively prime means the GCF of both the numbers should be 1.
Now consider the number.
Option 1) 19 and 76
19 = 19 × 1
76 = 2 × 2 × 19
Here GCF is 19 so the number are not relatively prime.
Option 2) 60 and 77
60 = 2 × 2 × 3 × 5
77 = 7 × 11
Here GCF is 1 so the number are relatively prime.
Option 3) 70 and 195
70 = 2 × 5 × 7
195 = 3 × 5 × 13
Here GCF is 5 so the number are not relatively prime.
Option 4) 18 and 105
18 = 2 × 3 × 3
105 = 3 × 5 × 7
Here GCF is 3 so the number are not relatively prime.
Hence, the correct option is B. 60 and 77
