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anonymous
 5 years ago
how many different comminities can be formed from 12 teachers, and 40 students, if the commitie consists 3 teachers and 4 students? In how many ways can the commitie of 7 members be selected?
anonymous
 5 years ago
how many different comminities can be formed from 12 teachers, and 40 students, if the commitie consists 3 teachers and 4 students? In how many ways can the commitie of 7 members be selected?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0find each seaprately (teachers and students) in the same way you have been, then multiply the two answers that you get.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and then how does 7 come in?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I keep getting a decimal for a number :/

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i can show u what I did

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0out of 12 teachers you choose 3 = 12C3 and out of 40 students you choose 4 = 40C4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Do those separately, then multiply the answers you get

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No decimals should show up

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0for the 40 students is it 40*39*38*37?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or is that when u do the 4?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0for Choosing when order doesn't matter, do 40*39*38*37 and then divide by 4*3*2*1 Similar for the teachers

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0teachers is 12*11*10 divided by 3*2*1 > notice that you get the same number of factors in the numerator as the denominator

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok so now i got 91390 and then for the teachers 220

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0multiply for a very large number
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