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Jasten
15.10.2019 •
Mathematics
How many different committees can be formed from 8 teachers and 31 students if the committee consists of 3 teachers and 3 students?
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Ответ:
This is because 8 divided by three equals 2 committees, with 2 left over. Even though you have some left over, you cannot create another full committee. Hope that this helped you!
Ответ:
There are 8C3 * 31C3 ways in selecting 3 teachers and 3 students.
Since order doesn't matter, we use combinatoric, nCr, instead of permutation, nPr.
Now, we merely need to select 3 teachers from 8 teachers (objects) and 31 students (objects).
Since, we want them simultaneously, we need to multiply the two together.
In essence, there are 8C3 × 31C3 ways
Ответ:
c is the correct one. i think.