SOLUTION: How many ways: 1- 20 students can sit in a class of 30 chairs. 2- 20 students should sit on 30 chairs in a row. 3- 20 students should sit around a table of 20 chairs.

Question 844042: How many ways:
1- 20 students can sit in a class of 30 chairs.
2- 20 students should sit on 30 chairs in a row.
3- 20 students should sit around a table of 20 chairs.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

How many ways:

1-  20 students can sit in a class of 30 chairs.  30C20

2-  20 students should sit on 30 chairs in a row. (30C10)20!

3-  20 students should sit around a table of 20 chairs. 19! 

RELATED QUESTIONS

how many ways 20 students can sit in a class of 30 chairs ?
 (answered by ewatrrr)
How many ways can five students sit in a row of eight chairs for a... (answered by stanbon)
There are 6 chairs in a row. There are 11 students. How many ways can these students sit... (answered by stanbon)
How many different ways can five students sit in five chairs in a row if Mark and Ophelia  (answered by stanbon)
in how many ways can 2 co-chairs be selected from a club of 20... (answered by dabanfield)
Suppose there are 3 soft cushion seats in your class. How many possible combinations of... (answered by Edwin McCravy)
How many ways can 6 students sit in 3 seats in a row... (answered by ewatrrr,sudhanshu_kmr)
 In how many different ways can five friends sit for a photograph of five chairs in a... (answered by ikleyn)
There are two rows of seats in the classroom and each row has six seats. If a class has... (answered by Boreal)