Question

Which pair of numbers are relatively prime!!

A. 10 and 27
b. 10 and 48
C. 10 and 70
D 10 and 35

Answer 1

Relatively prime numbers have no common prime factors.
List the prime factors of all the numbers below, and see which pair has no prime factors in common.
10: 2, 5
27: 3
48: 2, 3
70: 2, 5, 7
35: 5, 7
Which pair of numbers has no common prime factors?