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23 August, 16:27

An activity book has 21 pages of crossword puzzles, 18 pages of cryptograms, and 12 pages of mazes. bianca randomly selects a page, completes the activity, and then randomly selects another page to complete. what is the probability that bianca first completes a maze and then completes a crossword puzzle?

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  1. 23 August, 17:48
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    21 crosswords, 18 cryptograms, 12 mazes ... total of 51 activities

    P (maze) : 12/51 ... reduces to 4/17

    P (crossword) 21/50

    P (both) : 4/17 * 21/50 = 84/850 = 42/425 <=
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