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If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)

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Question: If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)

Options:

  1. 9
  2. 10
  3. 11
  4. 12

Correct Answer: 10

Exam Year: 2023

Solution: 

Mean = (7 + 9 + 11 + 13) / 4 = 10.

If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)

Practice Questions

Q1
If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)
  1. 9
  2. 10
  3. 11
  4. 12

Questions & Step-by-Step Solutions

If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)
  • Step 1: Add the numbers together: 7 + 9 + 11 + 13.
  • Step 2: Calculate the sum: 7 + 9 = 16, then 16 + 11 = 27, and finally 27 + 13 = 40.
  • Step 3: Count how many numbers there are: There are 4 numbers (7, 9, 11, 13).
  • Step 4: Divide the total sum by the number of numbers: 40 / 4.
  • Step 5: Calculate the division: 40 divided by 4 equals 10.
  • Mean Calculation – The mean (average) is calculated by summing a set of numbers and dividing by the count of those numbers.
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