Craig is training for a race. He bikes every 2 days and swims every 3 days. If he biked and swam today, how many days will pass before he bikes and swims on the same day again, the least common multiple of the numbers of days? Multiples of 2: 2, 4, 6, 8, 10, 12, . . . Multiples of 3: 3, 6, 9, 12, 15, 18, . . .
Answers:
1. 2 days
2. 3 days
3. 6 days
4. 12 days