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Directrix
 3 years ago
In how many ways can 5 students be arranged for a group picture with 3 in the first row and 2 in the back row?
Directrix
 3 years ago
In how many ways can 5 students be arranged for a group picture with 3 in the first row and 2 in the back row?

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Directrix
 3 years ago
Best ResponseYou've already chosen the best response.4Hint: Whatever the answer, would it be the same if the 5 students were all on one row with the question being "In how many ways can 5 students be arranged in a row ( line )for a group photo?

Directrix
 3 years ago
Best ResponseYou've already chosen the best response.4The two questions have the same answer: 120 ways. Three students on the first row and two in the back can be done in the same number of ways as 5 students arranged on one row.

Directrix
 3 years ago
Best ResponseYou've already chosen the best response.4Yu missed it. We're practicing combinatorics.

salini
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1330001939260:dw each time i fill a place one student is taken from my option to fill the next seat as a single student cannot sit in boh seats

Directrix
 3 years ago
Best ResponseYou've already chosen the best response.4The picture is right. Then, use the multiplication rule. 5*4*3*21 = 120 ways

salini
 3 years ago
Best ResponseYou've already chosen the best response.0yeah i forgot to tell the main 'MULTIPLY' part
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