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If the 3rd term of an arithmetic progression is 12 and the 7th term is 24, what is the common difference?

Practice Questions

1 question
Q1
If the 3rd term of an arithmetic progression is 12 and the 7th term is 24, what is the common difference?
  1. 3
  2. 4
  3. 6
  4. 5

Questions & Step-by-step Solutions

1 item
Q
Q: If the 3rd term of an arithmetic progression is 12 and the 7th term is 24, what is the common difference?
Solution: Let the first term be a and the common difference be d. We have a + 2d = 12 and a + 6d = 24. Subtracting these gives 4d = 12, so d = 3.
Steps: 0

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