A bag contains three green marbles, four blue marbles and two orange marbles. If a marble is picked at random than the probability that it is not and orange marble is
7/9
To calculate the probability of picking a marble that is not an orange marble, we need to determine the total number of marbles that are not orange and the total number of marbles in the bag.
Since there are three green marbles, four blue marbles, and two orange marbles in the bag, the total number of marbles in the bag is 3 + 4 + 2 = 9.
Now, let's calculate the total number of marbles that are not orange. Since we have three green marbles and four blue marbles, the total number of marbles that are not orange is 3 + 4 = 7.
Therefore, the probability of picking a marble that is not an orange marble is 7/9.
To find this probability, divide the number of marbles that are not orange by the total number of marbles in the bag:
Probability = Number of marbles that are not orange / Total number of marbles in the bag
= 7 / 9
≈ 0.7778
So, the probability that a marble picked at random is not an orange marble is approximately 0.7778 or 77.78%.