Answer:
A pair of numbers is said to be co prime or relatively prime if they have no common factor.
A.
14 = 2 × 7
91 = 13 × 7
B. 14 = 2 × 7
581 =7 ×83
3. 201 =3 ×67
770 = 7 ×11×10
4. 12 = 3 ×2×2
105 = 3×5×3×5
So we can see that Option C→ 201 and 770 are relatively prime.
