There are 15 total girls on a team. The coach wants to run a drill and needs to

Question

There are 15 total girls on a team. The coach wants to run a drill and needs to arrange the girls in 5 rows of 3 girls each. What is the probability that Sally and Mary will end up in the same line? Can someone please explain this to me? I dont know what to do here. There are 15 total girls on a team. The coach wants to run a drill and needs to arrange the girls in 5 rows of 3 girls each. What is the probability that Sally and Mary will end up in the same line? Can someone please explain this to me? I dont know what to do here.

Explanation / Answer

permutation 5 p 3 = 5 X 4 X 3 =60 combination 5 C 3 = 5 x 4 3 ---------- 1 x 2 x 3 = 10 combination 10/60 = 16.67 %

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