Answer
a) $ P(B- or -number)=\frac{4}{5}$
b) $P(red-or- number)=\frac{3}{5}$
c) $P(red-or-yellow)=\frac{5}{5}=1 $
d) $P(yellow- or- letter) =\frac{4}{5} $
Work Step by Step
a) $ P(B- or -number)=\frac{4}{5}$
4 of 5 cards are a B or a number
b) $P(red-or- number)=\frac{3}{5}=\frac{1}{7} $
3 of 5 cards are red or a number
c) $P(red-or-yellow)=\frac{5}{5}=1 $
5 of 5 cards are red or yellow
d) $P(yellow- or- letter) =\frac{4}{5} $
4 of 5 cards are a letter or yellow.
