Question

Which of the following numbers are co-prime?

(a) 18 and 35 (b) 15 and 37 (c) 30 and 415
(d) 17 and 68 (e) 216 and 215 (f) 81 and 16

Answer 1

Explanation:

co-prime is when ur numbers have no common factors other then 1.

(a) 18 and 35....this is co-prime

(b) 15 and 37....this is co-prime

(c) 30 and 415....not co-prime....common factor of 5

(d) 17 and 68...not co-prime....common factor of 17

(e) 216 and 215.....this is co-prime

(f) 81 and 16....this is co-prime