1230.55 – Letters and Envelopes

Tags:Problem Set 18Algebra ILogic

Maggie wrote 4 letters and correctly addressed the corresponding envelopes. She put a letter into each envelope but got some mixed up. Given that she either got exactly 3 right, or exactly 2 right, or exactly one wrong, how many did she get right?


She got two right. Getting 1 wrong is the same as getting 3 right.