In a freshmen high school class of 400 students, 110 take math, 130 take English, 150...
In a freshmen high school class of 400 students, 110 take math, 130 take English, 150 take history, 30 take math and English, 40 take math and history, 50 take English and history, and 280 take math or English or history. If a freshmen strudent is picked at random from the class, then, for k=0,1,2,3, find the probability that:
a. He takes exactly k of the named subjects.
b. He takes at least k of the named subjects.
c. He takes no more than k of the named subjects.
Homework Answers
![120 only 280-(math = #ic+oy, 0) me english only 280-010+, , so-%) = =60 0h0ec+4 . 280-180 = 100 take 2(の) more Le y)-ナ(mam and Englis and o History math ond English and Histos matn and Englisl. and History]十(math and His+63) and wo eng sh 二40 Math and Eng lish andsoy EwgIsihaud and No math](http://img.homeworklib.com/questions/5140fb70-5d1e-11ea-b2f5-c3a9b0b6a904.png?x-oss-process=image/resize,w_560)
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In a freshmen high school class of 400 students, 110 take math,
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