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A biology teacher has 5 different pets they keep in their classroom. For an upcoming holiday break, the teacher will send the pets home with students. Suppose that 16 of the teacher's 75 students volunteer to take a pet home, and the teacher will randomly select 5 of those volunteers to each take 1 pet home.
The permutation formula 
nPr can be used to find the number of unique ways the teacher can distribute pets to the volunteers.
What are the appropriate values of 
n and 
r ?

{:[n=◻],[r=◻]:}

A biology teacher has 55 different pets they keep in their classroom. For an upcoming holiday break, the teacher will send the pets home with students. Suppose that 1616 of the teacher's 7575 students volunteer to take a pet home, and the teacher will randomly select 55 of those volunteers to each take 11 pet home.\newlineThe permutation formula nPr n \mathrm{P} r can be used to find the number of unique ways the teacher can distribute pets to the volunteers.\newlineWhat are the appropriate values of n n and r r ?\newlinen=r= \begin{array}{l} n=\square \\ r=\square \end{array}

Full solution

Q. A biology teacher has 55 different pets they keep in their classroom. For an upcoming holiday break, the teacher will send the pets home with students. Suppose that 1616 of the teacher's 7575 students volunteer to take a pet home, and the teacher will randomly select 55 of those volunteers to each take 11 pet home.\newlineThe permutation formula nPr n \mathrm{P} r can be used to find the number of unique ways the teacher can distribute pets to the volunteers.\newlineWhat are the appropriate values of n n and r r ?\newlinen=r= \begin{array}{l} n=\square \\ r=\square \end{array}
  1. Understand nn and rr: To determine the appropriate values of nn and rr for the permutation formula, we need to understand what nn and rr represent in the context of permutations. In the permutation formula nPrnPr, nn represents the total number of items or options to choose from, and rr represents the number of items to be chosen.
  2. Identify nn and rr: In this scenario, nn would be the number of students who volunteered to take a pet home, since the teacher is choosing from these students. There are 1616 students who volunteered.
  3. Determine nn and rr values: rr would be the number of pets that need to be taken home, since the teacher is selecting students for each pet. There are 55 pets that need to be taken home.
  4. Calculate permutation: Therefore, the appropriate values for the permutation calculation are n=16n = 16 and r=5r = 5.

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