Practice problem
The Algebra and Combinatorics of PIE
PIEs
My class has 20 students in it. Fourteen of them like apple pie, and 6 of them like cherry pie. Four of them don't like either type of pie.
How many students like both apple and cherry pie?
Practice problem
My class has 20 students in it. Fourteen of them like apple pie, and 6 of them like cherry pie. Four of them don't like either type of pie.
How many students like both apple and cherry pie?