Notice how the numerator changed for the second draw of "orange" in #18
19) P(A) = 3/6 (three regions are odd-numbered out of six total) 20) P(B) = 1/6 (one region is numbered 5 out of six total) 21) P(A and B) = 1/6 ("and" means the spinner lands in a spot qualifying for membership in both sets -- both odd, and numbered "5". In other words, the set intersection. Only 1 of the 6 spaces qualifies for membership in both sets.) 22) P(A or B) = 1/2 ("or" means the spinner lands in a spot qualifying for membership in either set, or both. In other words, the set union.)
answer both balls are white
best my answer :)
Mar 9th, 2015
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