A reading club owns 5 different novels and 4 different biographies. In how many different ways can a member borrow 4 of these 9 books if the selection must include at least one biography?
121
126
120
125
The verified answer and full solution are one login away
Every answer here is machine verified, with a step-by-step solution that teaches the method. Your login also unlocks a 7-question mock preview in the real exam interface.
Log in to see the answerMore permutations combinations questions