Casio fx-350MS - Permutations and Combinations

CHAPTER 5 Permutations and Combinations
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A Mathematics Society committee consists of a president, a vice-
president, a secretary and a treasurer. How many ways can such a
committee be chosen from 45 members?
OPERATION
1. To determine
This means that there are 3,575,880 ways to form the committee.
A group of five students is to be chosen from a class of 30 for a debate.
In how many ways can such a group be formed?
OPERATION
1. To form a combination of any five students from 30 students, press
This means that the number of combination is 142,506.
Pressing will erase all memory and return the calculator
to its default mode: COMP mode.
45P4
3,575,880
30Ç5
142,50
6
Exam
p
le 2
Exam
p
le 1