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The numbers 1 through 15 were each written on individual pieces of (April 2021 - Z04 (76CPRE))
The numbers 1 through 15 were each written on individual pieces of paper, 1 number per piece. Then the 15 pieces of paper were put in a jar. One piece of paper will be drawn from the jar at random.
What is the probability of drawing a piece of paper with a number less than 9 written on it?
A) 1/9
B) 1/15
C) 6/15
D) 7/15
E) 8/15
Solution
Correct answer: E) 8/15.
The probability of drawing a certain outcome is the number of favorable outcomes divided by the total number of possible outcomes.
In this case, the favorable outcome is drawing a number less than 9. There are eight such numbers: 1, 2, 3, 4, 5, 6, 7, and 8.
The total number of possible outcomes is 15, since there are 15 pieces of paper with numbers 1 through 15.
Therefore, the probability of drawing a number less than 9 is:
Favorable outcomes / Total possible outcomes = 8 / 15
Exam Edition: April 2021 - Z04 (76CPRE)
Exam Year: 2021
Related topics: Repetitive numbers, Probability