To find:How many different groups of five students are possible.
Answer to Problem 58E
Explanation of Solution
Given information:
Five students are randomly selected from a class of 20 students.
In order to find a 5-person group out of a class of 20, when order does not matter, we use combinations.
The number of combinations is given by:
Where
Therefore,
On substituting values in above combinations formula
We get
Therefore,
Chapter 9 Solutions
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