A bag contain 12 green balls,14 yellow balls and 4 red balls.what is the probability of selecting a red or green balls?
how many balls in total?
how many red or green?
P(red|green) = #redorgreen / #total
To find the probability of selecting a red or green ball, we need to know the total number of balls in the bag and the number of red or green balls.
In this case, the total number of balls is 12 + 14 + 4 = 30.
The number of red or green balls is 12 + 4 = 16.
Therefore, the probability of selecting a red or green ball can be calculated by dividing the number of red or green balls by the total number of balls:
Probability = Number of red or green balls / Total number of balls
= 16 / 30
= 8/15
Hence, the probability of selecting a red or green ball is 8/15.