Question

A bag contains 6 red marbles, 4 blue marbles and 3 yellow marbles. You reach into the bag and pull out a marble. Find P(red OR blue)

Answer 1

The probability of pulling out a red or blue marble can be found by adding the probability of pulling out a red marble to the probability of pulling out a blue marble.

The probability of pulling out a red marble is 6/13, since there are 6 red marbles out of a total of 13 marbles in the bag.

The probability of pulling out a blue marble is 4/13, since there are 4 blue marbles out of a total of 13 marbles in the bag.

Therefore, the probability of pulling out a red or blue marble is (6/13) + (4/13) = 10/13.

So, P(red OR blue) = 10/13.