Question 338357
30 R - Red
50 B - Blue
20 W - White
100 total
{{{P(R)=30/100=3/10}}}
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{{{P(B)=50/100=1/2}}}
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{{{P(not W)+P(W)=1}}}
{{{P(not W)=1-P(W)=1-20/100=80/100=4/5}}}
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{{{P(R or B)=P(R)+P(B)=3/10+5/10=8/10=4/5}}}