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Probability that the first ball is red = 8/16 (8 red balls available and total 16 balls) = P(A) ( say)
Probability that the second ball is green = 8/15 ( 8 green balls available and total 15 balls) = P(B) ( say)
Required probability = P(A) * P(B) = 8/16 * 8/ 15
Ans is 4/15

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