Indicate first 4 of the number sequence in this pattern in terms of the number of the house where the street light is positioned and find the constant difference



Answer :

Answer:

Step-by-step explanation:

To determine the first 4 numbers in the sequence and the constant difference in an arithmetic sequence, you need to start by understanding the pattern. Let's break this down:

### Arithmetic Sequence Basics:

An arithmetic sequence is characterized by a constant difference between consecutive terms. The general form of an arithmetic sequence is:

\[ a_n = a_1 + (n-1)d \]

where:

- \( a_n \) is the \( n \)-th term,

- \( a_1 \) is the first term,

- \( d \) is the common difference,

- \( n \) is the position of the term in the sequence.

### Given Problem:

The problem refers to the number sequence associated with street lights positioned at house numbers. To solve this, you need to:

1. Identify the initial term (\( a_1 \)).

2. Find the common difference (\( d \)).

#### Example Calculation:

Let's assume we need to find the first 4 terms and the common difference of a sequence given the positions of street lights:

1. **Identify the first term (\( a_1 \)) and the common difference (\( d \))**:

  Suppose the house numbers (positions of the street lights) are given or identified as:

  - House 1: \( a_1 \)

  - House 2: \( a_1 + d \)

  - House 3: \( a_1 + 2d \)

  - House 4: \( a_1 + 3d \)

  If you were given specific house numbers where street lights are positioned, you could use these numbers to determine \( a_1 \) and \( d \).

2. **Example**:

  Let’s say the house numbers are given as follows:

  - House 1: 3

  - House 2: 7

  - House 3: 11

  - House 4: 15

  To determine the constant difference (\( d \)):

  - Difference between House 2 and House 1: \( 7 - 3 = 4 \)

  - Difference between House 3 and House 2: \( 11 - 7 = 4 \)

  - Difference between House 4 and House 3: \( 15 - 11 = 4 \)

  The constant difference \( d \) is 4.

3. **Sequence Determination**:

  The sequence is \( 3, 7, 11, 15 \), with each number showing the position of the street light at each house number.

### Conclusion:

For the arithmetic sequence based on street light positions:

- **First 4 terms**: 3, 7, 11, 15

- **Constant difference**: 4