SOLUTION: what is the largest number of different regions into which the plane can be divided by n lines?

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Question 644444: what is the largest number of different regions into which the plane can be divided by n lines?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
what is the largest number of different regions into which the plane can be divided by n lines?
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Use Google to search for "number of lines and regions".
Ans: 1 + [n(n+1)/2]
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Cheers,
Stan H.
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