If the sum of the first 5 terms of an arithmetic progression is 50, what is the

Practice Questions

Q1
If the sum of the first 5 terms of an arithmetic progression is 50, what is the average of these terms? (2023)
  1. 8
  2. 10
  3. 12
  4. 14

Questions & Step-by-Step Solutions

If the sum of the first 5 terms of an arithmetic progression is 50, what is the average of these terms? (2023)
  • Step 1: Understand that an arithmetic progression (AP) is a sequence of numbers where the difference between consecutive terms is constant.
  • Step 2: Know that the sum of the first n terms of an AP is denoted as S_n.
  • Step 3: In this question, we are given that the sum of the first 5 terms (S_5) is 50.
  • Step 4: The average of the first n terms is calculated using the formula: Average = S_n / n.
  • Step 5: Here, n is 5, so we will use the formula: Average = S_5 / 5.
  • Step 6: Substitute the value of S_5 into the formula: Average = 50 / 5.
  • Step 7: Calculate the average: 50 divided by 5 equals 10.
  • Step 8: Conclude that the average of the first 5 terms of the arithmetic progression is 10.
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