[問題] 幾題計量問題
Q2-3
11. right triangle PQR is to be constructed in x-y plane
so that the 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?
Ans:9,900
這個怎麼算比較快?
29. a straight pipe 1 yard in length was marked off in fourths and
also in thirds. If the pipe was then cut into separate pieces at each of
these markings, which of the following gives all the different lengths of
the pieces, in fractions of a yard?
不是在1/3及1/4處切開嗎? 總共有三段1/4, 1/12, 2/3
還是我誤會題意了:( 不太懂最後的in fractions of a yard
Ans:1/12, 1/6, 1/4
另外想請問來欣Q作業解答有沒有錯的阿
有做到幾題答案好像不對 我是2008三月發的
還有現在CAT兩本還是2nd edition嗎?
謝謝回答..感恩
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