A box contains 15 cards. There are 5 red cards labeled 1, 2, 3, 4, and 5. There are 5 blue cards labeled 1, 2, 3, 4, and 5. There are 5 green cards labeled 1, 2, 3, 4, and 5. One card is drawn from the box.

What is the probability that it is a green card with an even number or a blue card?

Question

A box contains 15 cards. There are 5 red cards labeled 1, 2, 3, 4, and 5. There are 5 blue cards labeled 1, 2, 3, 4, and 5. There are 5 green cards labeled 1, 2, 3, 4, and 5. One card is drawn from the box.

 

What is the probability that it is a green card with an even number or a blue card?

yanasidlinskiy · Answer

There are 2 green cards with even numbers and there are 5 blue cards. Therefore there are 2 + 5 = 7 cards involved in the calculation.
The probability of selecting a green card with an even number or a blue card is 7/15