- AYes, they are co-prime
- BNo, common factor 3
- CNo, common factor 5
- DNo, common factor 7
Step-by-Step Solution
15 = and 7 share no common factor except 1, so they are co-prime even though neither is prime.
Answer: A) Yes, they are co-prime
Two whole numbers are co-prime if their only common factor is 1. Lakshmi picks the numbers 15 and 28.
Are 15 and 28 co-prime?
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