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Let N denotes,the greatest number of poi...

Let N denotes,the greatest number of points in which m straight lines and n circles intersect. Then,

A

n divide `(N-.^(m)C_(2))`

B

m divides `N-.^(n)P_(2))`

C

`N-.^(m)C_(2)` is an even integer

D

`N-.^(m)C_(2)-.^(m)P_(2)` is an even integer.

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The correct Answer is:
a,c,d
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