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Mastering Geometric Sequences

Authored by Bilise Dejene

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12th Grade

Mastering Geometric Sequences
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the common ratio in the sequence 2, 6, 18, 54?

6

3

4

2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify if the sequence 5, 15, 45, 135 is geometric.

No, the sequence is random.

Yes, the sequence is not geometric.

No, the sequence is arithmetic.

Yes, the sequence is geometric.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the 5th term of the geometric sequence 3, 9, 27, ...?

243

729

81

162

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Determine the common ratio of the sequence 1/2, 1, 2, 4.

2

1

3

4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the sequence 7, 14, 28, 56 a geometric sequence?

No

It is an arithmetic sequence

The sequence is random

Yes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the 4th term of the geometric sequence where the first term is 4 and the common ratio is 3.

81

36

108

12

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the nth term of a geometric sequence?

a_n = a_1 + r^(n-1)

a_n = r^(n-1)

a_n = a_1 * n * r

a_n = a_1 * r^(n-1)

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