The probability of selecting an even numbered ball or the number 12 ball is 7/15.
The mathematical tool of probability is used to examine unpredictability. It is concerned with the probability of an event occurring.
Given the lottery game has balls numbered 1 through 15.
The even number between 1 to 15 is 2, 4, 6, 8, 10, 12, 14.
so the total even number between 1 to 15 is n(A) =7.
then the probability to selecting an even numbered ball P(A) = 7/15.
Number of 12 n(B) =1
then the probability to selecting the number 12 ball P(B) = 1/15
A number is also an even number the P(A and B ) = 1/15.
Use the formula P(A or B) = P(A)+P(B)-P(A and B) to find the probability of selecting an even numbered ball or the number 12 ball
P(4 or even number ) = 7/15+1/15-1/15
= 7/15
Hence the probability is 7/15.
Learn more about probability here- brainly.com/question/11234923
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