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12 February, 17:52

a bag contains 9 counters 4 of the counter are blue 2 counter are taken out of bag at random calculate the probability that at least one of the two counter is blue

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  1. 12 February, 18:03
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    6+5/18

    Step-by-step explanation:

    the probability that both are blue;

    4/9 * 3/8 = 6

    the probability that only one is blue;

    4/9 * 5/8 = 5/18

    6 + 5/18
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