Probability of Drawing a Red or Blue Ball

A bag contains 10 red balls, 6 blue balls, and 4 green balls. A ball is randomly drawn from the bag. What is the probability that the ball drawn is either red or blue?

To find the probability of drawing a red or blue ball, we first need to determine the total number of balls in the bag. The total can be calculated using the formula:

$$ ext{Total balls} = ext{Red balls} + ext{Blue balls} + ext{Green balls} $$

After calculating the total, we can use the probability formula:

$$ P( ext{Red or Blue}) =\frac{ ext{Number of Red balls} + ext{Number of Blue balls}}{ ext{Total balls}} $$