The teacher can choose the group of 5 students to present on first day in 252 ways
Step-by-step explanation:
When the selection has to be made and the order of selection doesn't matter, combinations are used.
The formula for combination is:
[tex]C(n,r) = \frac{n!}{r!(n-r)!}[/tex]
Here
Total students = n = 10
Students that have to present on first day = r = 5
So
[tex]C(10,5) = \frac{10!}{5!(10-5)!}\\\\=\frac{10!}{5!*5!}\\=252\ ways[/tex]
The teacher can choose the group of 5 students to present on first day in 252 ways
Keywords: Combination, Selection
Learn more about combination and selection at:
- brainly.com/question/10480770
- brainly.com/question/10546617
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