How many different ways can 3 men and 4 ladies sit in a row if the sea..
How many different ways can 3 men and 4 ladies sit in a row if the seating needs to be alternate? => 144 or 7 or 35 or 63..
In how many different ways, can four students, Jim, Paul, Justin, and ..
In how many different ways, can four students, Jim, Paul, Justin, and Bill, be seated in four chairs for a group discussion? => 22 or 24 or 16 or 20..
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"How many ways can 4 people be seated in a row containing 4 seats" Questions & Answers
From Yahoo Answers
Question : In how many ways can four boys and four girls be seated in a row containing eight seats if the boys and girls must alternate?
How about if there are 4 boys and 3 girls now with 8 seats also???
Please! HELP AND SHOW HOW!
Answer : 2 (4!)^2 = 1152 ways 4!3! = 144.. More from Yahoo Answers
Answer : 2 (4!)^2 = 1152 ways 4!3! = 144.. More from Yahoo Answers
Question : How many rows are in the corner section of a stadium containing 2040 seats if the first row has 10 seats and each successive row has 4 additional seats?
I figured out the answer the loong way, 30 rows, but I would like to know how to do it the correct and quick way with arithmetic sequence.
Answer : 2040=n/2(20+(n-1)x4) 4080=20n+4n^2-4n 0.......=n^2+4n-1020 0.......=(n+34)(n-30) n=30 prove last row=126 a=10 s30=30/2(126+10)=2040.. More from Yahoo Answers
Answer : 2040=n/2(20+(n-1)x4) 4080=20n+4n^2-4n 0.......=n^2+4n-1020 0.......=(n+34)(n-30) n=30 prove last row=126 a=10 s30=30/2(126+10)=2040.. More from Yahoo Answers
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