If number of integral coordinates (x,y) which lie inside to the circle – InterviewSolution

1.	If number of integral coordinates (x,y) which lie inside to the circle x2+y2=25 is n, then [n9] is ( [.] represents the greatest integer function. )
Answer» If number of integral coordinates $(x, y)$ which lie inside to the circle $x^{2} + y^{2} = 25$ is $n,$ then $[\frac{n}{9}]$ is ( $[.]$ represents the greatest integer function. )

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