1)40C6=40!/(6!x34!)=3,838,380
2)15C3=15!/(3!x12!)=455
1)
A lottery is set up in which players pick six numbers from the set 1, 2, 3, ... , 39, 40. How many different ways are there to play this lottery? (In this game the order in which the numbers are picked does NOT matter.)
2)
A club of 15 students will form a subcommittee consisting of three students. How many different such subcommittees can be formed?
1 answer
3 answers