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# Tests in Sequences And Series

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Note: These tests should be done in suggested order.

Current: Geometric Series Test
•  Q1: 1 pts Which of the following is a Geometric Series?
 1, 2, 3, 4,... 1, -1, 1,-1,... 2, 4, 6, 8,... 2, 3, 5, 8,...
•  Q2: 1 pts Which of the following is not a Geometric Series?
 1,-1, 1, -1,... 1, 1, 1, 1,... 16, 8, 4, 0,... 81, 27, 9, 3,...
•  Q3: 1 pts The next term in geometric series 3, 6, 12 is
 26 28 24 20
•  Q4: 2 pts The next term in geometric series 16, 4, 1 is
 $-1$ $\frac{1}{4}$ $\frac{1}{2}$ $-\frac{1}{4}$
•  Q5: 2 pts The first term of Geometric Series is 5 the ration between subsequent numbers is 2. What is the fourth term in the series?
 20 40 60 80
•  Q6: 2 pts The second term of a Geometric Series is 25 and the third term is 125. What is the first term in the series?
 1 5 10 20
•  Q7: 2 pts The first term of a Geometric Series is 2 and the 10th term is 2. What is the 100th term in the series?
 2 20 200 20000
•  Q8: 3 pts What is the 10-th term in this series 64,32,16
 $\frac{1}{2}$ $\frac{1}{4}$ $\frac{1}{8}$ $\frac{1}{16}$
•  Q9: 3 pts What is the sum of the first 6 terms in this series 3,6,12,...
 279 179 289 189
•  Q10: 3 pts $1 + \frac{1}{2} + \frac{1}{4} + \frac{1}{8}. . . = ?$
 $\infty$ $1$ $2$