Not counting Butterfingers Mark has 3+2=<<3+2=5>>5 candy bars.

So Mark has 12-5=<<12-5=7>>7 Butterfingers

# Answer

7
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
7
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?
train