Learning Task 1. "Ball is Life"
A box has 10 balls. Each ball is marked with single digit from 0 to 9. One ball is randomly selected. What is the probability that the number is:
1. greater than 6?
2. less than or equal to 3?
3. odd?
4. not 0?
5. 3 or 9?
Note: Nonsense - Report , Correct - Brainliest
Answers & Comments
Verified answer
Finding the Probability
The chance of an event to occur is called probability. It tells how likely something is to happen. You can write probability in three ways, fraction, decimal and percent. The formula to find the probability of an event is the one below:
Probability = number of events to happen / total number of possible outcomes
Solution:
1. The number of events to happen is 3 since there are three numbers greater than 6 (7, 8, 9). The total number of possible outcomes is 10 since there are ten balls. Thus, the probability is 3⁄10 or 0.3 or 30%.
2. The number of events to happen is 4 since there are four numbers less than or equal to 3 (3, 2, 1, 0). The total number of possible outcomes is 10. Thus, the probability is 4⁄10. Simplify to get 2⁄5 or 0.4 or 40%.
3. The number of events to happen is 5 since there are five odd numbers (1, 3, 5, 7, 9). The total number of possible outcomes is 10. Thus, the probability is 5⁄10. Simplify to get 1⁄2 or 0.5 or 50%.
4. The number of events to happen is 9 since there are nine non-zero digits. The total number of possible outcomes is 10. Thus, the probability is 9⁄10, 0.9 or 90%.
5. The number of events to happen is 2. The total number of possible outcomes is 10. Thus, the probability is 2⁄10. Simplify to get 1⁄5 or 0.2 or 20%.
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