Statisticseasy · Past Paper
A bag contains 5 red, 4 green, and 3 blue marbles. What is the probability of drawing a marble that is not red?
A5/12
B7/12
C1/2
D1/4
✓ Correct Answer: B — 7/12
Total = 12. Not red = 4 green + 3 blue = 7. P = 7/12.
Share this question
More from Statistics
- If the mean of $x$ and $1/x$ is $M$, then the mean of $x^2$ and $1/x^2$ is:
- The mean of 20 observations is 15. On checking, it was found that two observations 20 and 15 were miscopied as 3 and 32. The correct mean is:
- If the mean of 10, 15, x, 20, 25 is 18, find x.
- What is the mode of the following numbers: 2, 3, 3, 4, 5, 3, 2, 1?
- A card is drawn from a standard deck of 52 cards. What is the probability of getting a King?