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ahahkhyati.j
- Junior | Next Rank: 30 Posts
- Posts: 13
- Joined: Sat Oct 03, 2015 1:46 pm
Hi, Can someone please help me with this
Arrow AB which is a line-segment exactly 5 units long with an arrowhead at A, is to be constructed in the xy-plane. The x and y-coordinates are to be integers that satisfy the inequality 0<=x<=9 and 0<=y<=9. How many different arrows with this properties can be constructed?
(A) 50
(B) 168
(C) 200
(D) 368
(E) 536
Ans: E
I could figure out the horizontal and vertical ones but could not calculate the diagonal ones. Please help me with that
Thank you.
Arrow AB which is a line-segment exactly 5 units long with an arrowhead at A, is to be constructed in the xy-plane. The x and y-coordinates are to be integers that satisfy the inequality 0<=x<=9 and 0<=y<=9. How many different arrows with this properties can be constructed?
(A) 50
(B) 168
(C) 200
(D) 368
(E) 536
Ans: E
I could figure out the horizontal and vertical ones but could not calculate the diagonal ones. Please help me with that
Thank you.
