A box is filled with 6 red cards, 4 green cards, and 8 yellow cards

Question

A card is chosen at random from the box. What is the probability that the card is not green? 

Answer 1

First find out how many cards you have total. Add 6+4=10+8=18 cards total. Then you need to know the probability that the card is not green, so you want to know how many cards you have of red and yellow total. 6 red cards + 8 yellow cards= 14 cards. Now put 14 over 18, and simplify it.