Test, hurry, pencils and erasersDiscrete Mathematics Level 2
Mio has a big test today and she is in a hurry. For the test, she must bring at least two pencils and at least one eraser.
In her work drawer, she has \( 7 \) pencils and \( 4 \) erasers. Each pencil / eraser is unique. On how many ways can Mio get ready for the test?
Hints: Mio does not have to bring exactly two pencils and one eraser.