A jar contains 4 red balls and 6 blue balls. If three balls are drawn in sequence from the jar, what is the probability that two are red and one is blue?
number of ways to draw 3 balls from 10 balls =10C3 =120
number of ways to draw 2 red and 1 blue ball=4C2*6C1 =6*6=36
hence probability that two are red and one is blue =36/120=3/10=0.3
A jar contains 4 red balls and 6 blue balls. If three balls are drawn in...
A bag contains 4 white, 5 red and 6 blue balls. Three balls are randomly drawn, without replacement, from the bag. What is the probability that the first two balls are red and the last one is blue?
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