Math Problem Statement

What is the probability of landing on a number greater than 7 using the spinner numbered 1 to 12?

Solution

This question involves determining the probability P(>7)P(>7), where the spinner shown includes the numbers 1 through 12. The task is to calculate the probability that the spinner lands on a number greater than 7.

Step-by-Step Solution:

  1. Identify the favorable outcomes: Numbers greater than 7 on the spinner are: 8,9,10,11,128, 9, 10, 11, 12. There are 5 favorable outcomes.

  2. Identify the total possible outcomes: The spinner has numbers 11 through 1212, so there are 12 total outcomes.

  3. Calculate the probability: The probability P(>7)P(>7) is given by: P(>7)=Number of favorable outcomesTotal outcomes=512.P(>7) = \frac{\text{Number of favorable outcomes}}{\text{Total outcomes}} = \frac{5}{12}.

Final Answer:

P(>7)=512.P(>7) = \frac{5}{12}.

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Related Questions:

  1. What is the probability of landing on a number less than or equal to 7?
  2. What is the probability of landing on an odd number?
  3. What is the probability of landing on a number that is a multiple of 3?
  4. If the spinner is spun twice, what is the probability of landing on a number greater than 7 both times?
  5. What is the probability of landing on any number divisible by 4?

Tip:

When solving probability questions, always count the favorable outcomes carefully and confirm the total possible outcomes to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Probability
Favorable Outcomes vs. Total Outcomes

Formulas

Probability = Number of Favorable Outcomes / Total Outcomes

Theorems

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Suitable Grade Level

Grades 6-8