Question

What is the probability that Ram will choose a marble at random and that it is not black if the bowl contains 3 red, 2 black and 5 green marbles.

Answer 1

Do you know the definition of probablity?

Answer 2

So we need to find the probability of it not being black, so, colors besides for black over the total amount of marbles
There are 3 red, 2 black, and 5 green marbles, so added together, there are 10 marbles
And then there are 2 black marbles, so there are 8 more marbles that could be chosen that are not black
So you, have \(\frac{8}{10}\), and then you can simplify that fraction