Math Problem Statement
What is the probability of each case listed below when selecting an integer from 1 to 10 at random?
Solution
To answer the question in the uploaded image:
The question asks about probabilities related to selecting an integer from 1 to 10 at random for various cases. Here’s the solution for each:
- An odd number:
- Odd numbers between 1 and 10: {1, 3, 5, 7, 9}.
- Total = 5.
- Probability = .
- Greater than 7:
- Numbers greater than 7: {8, 9, 10}.
- Total = 3.
- Probability = .
- An even number and greater than 5:
- Even numbers greater than 5: {6, 8, 10}.
- Total = 3.
- Probability = .
- A multiple of 3:
- Multiples of 3 between 1 and 10: {3, 6, 9}.
- Total = 3.
- Probability = .
- A prime number:
- Prime numbers between 1 and 10: {2, 3, 5, 7}.
- Total = 4.
- Probability = .
Probability summary for the cases:
Let me know if you need further clarification or additional questions! Here are 5 related questions for practice:
- What is the probability of selecting a number divisible by 2 or 5 from 1 to 10?
- How many outcomes satisfy both "greater than 7" and "an odd number"?
- If you randomly choose two numbers from 1 to 10, what is the probability both are even?
- What is the probability of selecting a number less than 4?
- Are the events “odd number” and “greater than 7” mutually exclusive?
Tip: Remember to always double-check the conditions of probability questions to ensure correct outcomes are counted!
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Math Problem Analysis
Mathematical Concepts
Probability
Number Theory
Formulas
Probability = Favorable outcomes / Total outcomes
Theorems
Basic Probability Rules
Suitable Grade Level
Grades 6-8