Final answer:
The probability of drawing a green card or a blue card from the box is 4/7.
Step-by-step explanation:
To find the probability that a card drawn is either green or blue, we need to calculate the probability of drawing a green card and the probability of drawing a blue card, and then sum these probabilities.
The total number of cards in the box is 3 + 6 + 5 = 14. The probability of drawing a green card is 3/14, and the probability of drawing a blue card is 5/14.
Therefore, the probability of drawing a green card or a blue card is (3/14) + (5/14) = 8/14 = 4/7.
Complete Question:
A box is filled with 3 green cards, 6 red cards, and 5 blue cards. A card is chosen at random from the box. What is the probability that it is a green card or a blue card?