Problem
COM-B2-M02-P001 Two Sets
#1
★★☆☆☆ Level 2 of 5
In a class, \(18\) students study English, \(14\) study German, and \(6\) study both. How many students study at least one of these languages?
Add the two counts and subtract the intersection.
By inclusion-exclusion, the answer is \(18+14-6=26\). The six students studying both languages were counted twice, so subtract them once.
A warm-up on the meaning of the formula.