What is the probability that she will pick a black marble?

Question

Emily has six black marbles, ten clear marbles, and four blue marbles in a bag. If she picks one at random, what is the probability that she will pick a black marble?

Answer 1

P(event) = number of that event/total number of possibilities

In this case:

P(black) = number of black marbles/total marbles in the bag

P(black)=6/(6+10+4) = 6/20 (Reduce)

3/10