A) 820
B) 780
C) 901
D) 861
Correct Answer: B
Solution :
Now number of integral points lie in side the triangle are (a) If x = 1, then y may be 1,2,3......39 (b) If x = 2, then y may be 1,2,3......38 and so on If x = 39 , then value of y is 1 only. Hence number of interior points are \[1+2+3+......+39=\frac{39\times 40}{2}=780\]You need to login to perform this action.
You will be redirected in
3 sec