1. The problem statement, all variables and given/known data Let S be a set of Natural numbers with the property that every even number in S is divisible by 5. Which of the following must be true. a. 2 is not in S b. 5 is not in S c. S contains all multiples of 10 d. Every even number in S is divisible by 10 e. S contains no odd numbers 2. Relevant equations N/A 3. The attempt at a solution Just want to make sure my logic isn't faltering anywhere so here's what I figured . . . a. 2 is even, 2 is not divisible by 5, therefore 2 is not a member of S b. 5 is a natural number, 5 is not even, therefore 5 may be a member of S c. S does not necessarily contain all multiples of 10 d. Every even member in S must be divisible by 10 e. S may contain odd numbers Based on this a and d must be true. Thanks!