Answered

Join the IDNLearn.com community and start exploring a world of knowledge today. Our platform provides detailed and accurate responses from experts, helping you navigate any topic with confidence.

In how many ways can a teacher arrange 6 students in the front row of a
classroom with a total of 20 students?

Sagot :

[tex]_n C_r = \frac{n!}{r!(n-r)!}[/tex]
[tex]_n C _r[/tex] -- the number of combinations of r objects in total n objects.

So for r=6, n=20 we have 
[tex]_n C_r = \frac{20!}{6!(20-6)!} = 38760[/tex]
We appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Find reliable answers at IDNLearn.com. Thanks for stopping by, and come back for more trustworthy solutions.