[計量] 幾題韓網機經想請教
1.There are rooms from 101 to 550 inclusive in which the starting rooms are
numbered from 1,2,3 and the waiting rooms are numbered from 4,5,6. What is
probability that the rooms 4,5,6 will be choosed randomly?
Ans:1/2
(這題看不太懂題目的意思，是算排列組合嗎？)
2.One side of a triangle is given as 6 and the triangle is equilateral
triangle and another triangle is joined with it whose side is 10.
Col A: perimeter of polygon
Col B: 30
(Question is similar to this)
Ans:這題沒有給答案？
3.The area of circle of radius 'r' is twice the area of triangle then h in
terms of r is?
Ans.h=πr^2 / 2a
(不知道哪來的a，題目中好像沒有出現a啊？)
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