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A volumue of 50cm3 of oxygen was exploded in 50cm3 of carbon (ii)oxide .what was the volume of the residual gas at room
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A box contains 10 balls. Three of them are white, five are red, and two are
black. Calculate the following probabilities: a) The
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She wil fence 2 parts
A box contains 10 balls. Three of them are white, five are red, and two are black. Calculate the following probabilities: a) The first ball extracted is red. b) The first ball extracted is red or white. c) The second ball extracted is red given that the
