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1. |
Determine whether the sequence 3, 12, 48, 192 is geometric. If so, find its common ratio. |
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A. |
geometric, r = 9 |
B. |
geometric, r = 3 |
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C. |
geometric, r = 4 |
D. |
not geometric |
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Hint |
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2. |
What are the next three terms of the geometric sequence 4, 10, 25,…? |
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A. |
100, 250, 1000 |
B. |
62.5, 312.5, 1562.5 |
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C. |
100, 400, 1600 |
D. |
62.5, 156.25, 390.625 |
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Hint |
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3. |
Find the next two terms of the geometric sequence 50, 40, 32, … |
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A. |
24, 16 |
B. |
28.5, 25.52 |
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C. |
26, 22 |
D. |
25.6, 20.48 |
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Hint |
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4. |
Suppose that the sixth term of a geometric sequence is 1215, and the first term is 5. What is the second term? |
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A. |
9 |
B. |
8 |
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C. |
15 |
D. |
12.5 |
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Hint |
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5. |
Suppose that the geometric mean of two numbers is 48, and the first number is 12. What is the second number? |
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A. |
84 |
B. |
96 |
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C. |
24 |
D. |
192 |
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Hint |
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