作者pklapkla (被发现了＞＜)
看板GRE_Verbal
标题[请教] M3的数学一题
时间Mon Jun 4 00:23:00 2007
Right triangle PQR is to be constructed in the XY-plane so that right angle is
at P and PR is parallel to the X-axis. The X- and Y-coordinates of P, Q, and R
are to be integers that satisfy the inequalities -4<=X<=5 and 6<=Y<=16.
How many different triangles with these properties could be constructed?
(A) 100
(B) 1100
(C) 9900
(D)10000
(E)12100
答案C
想请问题目如何解释??还有如何算出答案??
感激不尽^^~~
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.134.31.97