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If the sum of the first 5 terms of an arithmetic progression is 50, what is the value of the first term if the common difference is 2?

Practice Questions

1 question
Q1
If the sum of the first 5 terms of an arithmetic progression is 50, what is the value of the first term if the common difference is 2?
  1. 8
  2. 10
  3. 12
  4. 14

Questions & Step-by-step Solutions

1 item
Q
Q: If the sum of the first 5 terms of an arithmetic progression is 50, what is the value of the first term if the common difference is 2?
Solution: The sum S_5 = 5/2 * (2a + 4d). Here, 50 = 5/2 * (2a + 8), solving gives a = 10.
Steps: 0

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