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4 October, 18:21

A bag contains 30 red tiles 15 green tiles and 5 yellow tiles one tile is drawn and then replaced then a second tile is drawn what is the probability that the first tile is yellow and tbe second tile green

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  1. 4 October, 18:37
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    30 red, 15 green, 5 yellow ... total of 50

    P (1st tile is yellow) = 5/50 which reduces to 1/10

    replaced

    P (2nd tile is green) = 15/50 which reduces to 3/10

    P (both events happening) = 1/10 * 3/10 = 3/100 or 0.03 or 3% <==
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