Mathematics, 21.03.2020 19:42 wrightlilybug07
Helen has a box of marbles. Of the marbles are yellow. Of the marbles are red. The rest of the marbles are blue. Helen pulls one marble out of the box at random, records its color, replaces it, and mixes up the marbles again. If she does this 200 times, how many blue marbles should she expect to pull out?
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Helen has a box of marbles. Of the marbles are yellow. Of the marbles are red. The rest of the marbl...
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