zhongKatherine zhongKatherine

17-10-2017
Mathematics

contestada

the probability of picking a red marble from a bag of 30 marbles is 1/5. how many blue marbles must be removed from the bag to increase the probability to 1/4

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anjanianamthoj anjanianamthoj

23-10-2017

4

this is stupid because it says i need to write twenty characters

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