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- The sum of the terms in a sequence is known as a Series.
- True
- False

- What is the formula for the sum of the first n terms of a geometric sequence?
- Which letter in the formula for the sum of the first n terms of a geometric series denotes the first term of the geometric series?
- a
- n
- r

- What is the value of r the common ratio of this series 1+5+25+125,,?
- 1
- 4
- 5
- 156

- Is the following a geometric series 1, 2, 4, 8,16,,,?
- No
- Yes

- The sum of the terms in a sequence is known as a Series.
- True
- False

- Find the sum of the first 4 terms of the geometric series 1 + 0.5 + 0.25 + ?
- 1.875
- 0.125
- 1.75

- Find the sum of the first 101 terms of the following geometric series 1 + 2 + 4 + 8 + 16,,,,.
- Is the sum of the first n terms of a geometric series always positive?
- Yes
- No

- The sum of the first 5 terms of a geometric series is 2343 and the sum of the first 6 terms of a geometric series is 11718.What is the 6th term?
- 7029
- 11715
- 11718
- 9375

- An investor invests €100 per year for each of the next five years getting 10% compound interest payable on the last day of each year. Assuming no money is withdrawn in this period, how much will be in the account at the end of the five years?
- €500
- €671.56
- €105.10
- €650

- Find the sum of the second 5 terms of the geometric series 3+6+12...
- 1488
- 3069
- 186
- 2976

- The sum of the first 3 terms of a geometric series is 13 and the fourth term is 27. Find the sum of the first four terms of this geometric series.
- 39
- 27
- 40

- Find the sum of the first 7 terms of the geometric series .
- 16

- Is the 1 + 2 + 4 + 7,, a geometric series?
- No
- Yes

(c) Project Maths Development Team