Question

3. In an urn there are 4 red balls
and 3 blue balls. If two balls are
drawn at random, find the prob-
ability that none is red ?

need step by step answer
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Answer 1

tgere are 7 balls in the urn and 2 are drawn and we have to find the probability that none is red . it means that we have to find the probability of picking 2 balls . therefore the probability of picking 2 blue balls is 4/7 times 3/6 which is 2/7