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10-02-2019
Mathematics

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there are red blue and black marbles in the bag
the probability of pulling out a red marbles 2/5
the probability of pulling out of black marble is 1/10
one marble is pulled out at random
what is the probability the marble will be blue

Respuesta :

10-02-2019

2/5 x 2 = 4/10 1/10 + 4/10= 5/10
5/10 - 10/10 = 5/10 The probability of the marble being blue is 5/10

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