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Box I contains 30 cards numbered I to 30 and Box II contains 20 cards numbered 31 to 50 . A box is selected at random and a card is drawn from it. The number on the card is found to be a non-prime number. The probability that the card was drawn from Box \(\mathrm{I}\) is :
in Mathematics by Bronze Status (9.2k points) | 303 views

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