A bag contains 8 red and 4 green balls. Find the probability that two balls are red and one ball is green when three balls are drawn at random.
nS= C4 12=495
nE= C28×C14=112
∴P(E)=112495
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
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