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In a geometric progression, if the first term is x and the common ratio is r, what is the expression for the sum of the first n terms?

Practice Questions

1 question
Q1
In a geometric progression, if the first term is x and the common ratio is r, what is the expression for the sum of the first n terms?
  1. x(1 - r^n)/(1 - r)
  2. x(1 + r^n)/(1 + r)
  3. xr^n/(1 - r)
  4. xr^n/(1 + r)

Questions & Step-by-step Solutions

1 item
Q
Q: In a geometric progression, if the first term is x and the common ratio is r, what is the expression for the sum of the first n terms?
Solution: The sum of the first n terms of a GP is given by S_n = a(1 - r^n)/(1 - r) for r ≠ 1.
Steps: 0

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