Write the next three multiples of 3.
21, 1.0.0

Here are some of  the multiples of 3:

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45

Step-by-step explanation:

Hope this helps! Good Luck!

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.