SOLUTION: 1. From a class of 40 students 8 students will be chosen to join the science field trip. In how many ways can the student be chosen?
2. In a gathering, the host makes sure that
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-> SOLUTION: 1. From a class of 40 students 8 students will be chosen to join the science field trip. In how many ways can the student be chosen?
2. In a gathering, the host makes sure that
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Question 1178812: 1. From a class of 40 students 8 students will be chosen to join the science field trip. In how many ways can the student be chosen?
2. In a gathering, the host makes sure that each guests shakes hands with everyone else. If there are 30 guests, how many handshakes will be done? Answer by ikleyn(52776) (Show Source):
(1) In ways.
It is the number of COMBINATIONS of 40 students taken 8 at a time.
= = = 76904685 ways. ANSWER
(2) For a party of n participants, the number of handshakes is = .
For n= 30 participants, the number of handshakes is = 435. ANSWER
