Question
Tue September 29, 2009 By:

triangles

Expert Reply
Thu January 07, 2010

Dear Student

The number of integral points which lie in the interior of the triangle with vertices (0,0) ,(0,21),(21,0) is

a)133

b)190

c)233

d)105

The ans wer is   (b)  190

If the lenght of the edges if the given triangle is "n" then number of integral points in the interior of teh triangle are

(n-2)(n-1)/2=  19X 20/ 2=190

Regards

Team

Topperlearning

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