Abag contains three white marbles, two black marbles, and five red marbles. what is the probability of picking a black marble

2/10 or 1/5 would be your answer. You get this answer by adding together the number of marbles to get a total of marbles, this will be the denominator, the number of black marbles is your numerator. Hope I helped :) If you have any other questions hmu!

2/10ths because if you add the marbles all together you would get 10 which would be your denominator and 2 would be your numerator because of how many black marbles

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