6.6.11 A card is drawn from a 52 card deck. We continue to draw until we have
drawn a king or until we have drawn 5 cards, whichever comes first. Draw a
tree diagram that illustrates the experiment. Find the probability that the
experiment ends before the fourth draw.


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6.6.12 Twenty percent of the library books in the fiction section are worn
and need replacement. Ten percent of the nonfiction holdings are worn. The
library's holdings are 40% and 60% nonfiction. Draw a tree diagram to
illustrate how to calculate the probability that a book chosen at random
from this library is worn and needs replacement.