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Mathematics, 26.08.2019 20:00, stef65
You are given an urn with 100 balls (50 black and 50 white). you pick balls from urn one by one without replacements until all the balls are out. a black followed by a white or a white followed by a black is "a colour change". calculate the expected number of colour changes if the balls are being picked randomly from the urn.
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Mathematics, 21.06.2019 19:00, Olavarriafamily1
The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).
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Mathematics, 22.06.2019 01:00, aatharris21
Azul has 4 green picks and no orange picks. you add orange picks so that there are 2 orange picks for every 1 green pick. how many picks are there now.
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You are given an urn with 100 balls (50 black and 50 white). you pick balls from urn one by one with...
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