Mark has 12 candy bars in total between Mars bars, Snickers, and Butterfingers. He has 3 Snickers and 2 Mars bars. How many Butterfingers does he have? Let's think first. Chain of thought:
Not counting Butterfingers Mark has 3 + 2 = 5 candy bars. So Mark has 12 - 5 = 7 Butterfingers.
Therefore, the answer is 7.