Statisticsmedium · Past Paper
What is the probability of getting a number divisible by 3 or 5 from integers 1 to 15?
A7/15
B8/15
C1/15
D2/15
✓ Correct Answer: A — 7/15
Divisible by 3: {3, 6, 9, 12, 15}. Divisible by 5: {5, 10, 15}. Union: {3, 5, 6, 9, 10, 12, 15} = 7 numbers. 7/15.
Share this question
More from Statistics
- What is the upper quartile (Q3) position in a dataset of 11 items?
- If P(A) = 0.7, what is the probability that A does not occur?
- What is the mode of the following numbers: 2, 3, 3, 4, 5, 3, 2, 1?
- In a symmetric distribution, which of the following is true?
- A class has 20 boys and 30 girls. The mean height of boys is 150 cm and girls is 140 cm. What is the mean height of the whole class?