Question

Which pair of numbers is relatively prime?

A.
18 and 45

   B.
26 and 91

   C.
10 and 33

   D.
14 and 63

Answer 1

Pair of numbers is relatively prime when numbers do not share factors except for 1.
The answer is C because:
10 can be divided by 1,2,5,10
33 can be divided by 1,3,11,33
Hope it helped :)