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Ishaan94
 3 years ago
Total number of integral points lying inside the triangle formed by the lines \(xy=0\) and \(x+y=a\), where \(a\) is any positive integer.
Ishaan94
 3 years ago
Total number of integral points lying inside the triangle formed by the lines \(xy=0\) and \(x+y=a\), where \(a\) is any positive integer.

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mukushla
 3 years ago
Best ResponseYou've already chosen the best response.1i just wanna clear my doubts for example xy=0 and x+y=3dw:1346087738940:dw one integral point inside this one ??

Ishaan94
 3 years ago
Best ResponseYou've already chosen the best response.0Yeah, I think so but I couldn't be sure either I got it on my test today.

mukushla
 3 years ago
Best ResponseYou've already chosen the best response.1a=3 1 points a=4 1+2 points a=5 1+2+3 points ...

Ishaan94
 3 years ago
Best ResponseYou've already chosen the best response.0For a = 21, 1 + 2 + 3 + ... + 19 = 19*20/2 = 190?

Ishaan94
 3 years ago
Best ResponseYou've already chosen the best response.0I happened to get the same but wasn't sure of it.
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