Math Problem Statement

Here is a geometric sequence: 3, _, 6, _, 12, _, 24. Find the missing terms.

Solution

The problem you uploaded shows a geometric sequence with missing terms. The sequence starts as follows:

3,_,6,_,12,_,243, \_ , 6, \_ , 12, \_ , 24

Let's find the missing terms.

In a geometric sequence, each term after the first is found by multiplying the previous term by a constant ratio rr.

  1. From 6 to 12, the ratio rr is:

r=126=2r = \frac{12}{6} = 2

  1. From 12 to 24, the ratio is:

r=2412=2r = \frac{24}{12} = 2

So, the common ratio r=2r = 2.

Now, let's find the missing terms:

  • The second term: The first term is 3, so the second term is 3×2=63 \times 2 = 6.
  • The fourth term: The third term is 6, so the fourth term is 6×2=126 \times 2 = 12.
  • The sixth term: The fifth term is 12, so the sixth term is 12×2=2412 \times 2 = 24.

Thus, the complete sequence is:

3,6,6,12,12,243, 6, 6, 12, 12, 24

Would you like any additional details on this solution?

5 Relative Questions:

  1. What is a geometric sequence, and how does it differ from an arithmetic sequence?
  2. How do you find the common ratio in a geometric sequence?
  3. How can you find the general term for any geometric sequence?
  4. Can the common ratio in a geometric sequence be a fraction?
  5. What happens if the common ratio is negative in a geometric sequence?

Tip:

When dealing with sequences, always verify the common ratio or difference to ensure consistency across the sequence.

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Math Problem Analysis

Mathematical Concepts

Geometric Sequences
Ratios

Formulas

r = a_n / a_(n-1)

Theorems

Geometric Progression Theorem

Suitable Grade Level

Grades 7-9