Here we answer many questions about the sequence 55, 165, 495, 1485... What type of sequence is 55, 165, 495, 1485? What is the next number in the sequence 55, 165, 495, 1485? What is the nth number in the sequence 55, 165, 495, 1485? What is the sum of the first 10 terms in the sequence 55, 165, 495, 1485? What is the sum of the first n numbers in the sequence 55, 165, 495, 1485?
In addition, we will also give you the formula that is used to calculate the next number or the nth number in 55, 165, 495, 1485, and the formula to calculate the sum of n numbers in 55, 165, 495, 1485.
A sequence is a list of numbers in a pattern, and each number in the sequence is called a term. We will use "terms" and "numbers" interchangeably on this page.
So, what type of sequence is 55, 165, 495, 1485? The sequence 55, 165, 495, 1485 has a common ratio of 3 between each term. We call this kind of sequence a geometric sequence. Below is an image illustrating the correlation between the geometric sequence 55, 165, 495, 1485 and its common ratio of 3.
Now, what is the next number in the sequence 55, 165, 495, 1485? Below is the formula used to calculate the next number in a geometric sequence, such as 55, 165, 495, 1485. The first term listed in the sequence is "a", the common ratio is "r", and "n" is the nth term of the geometric sequence.
a × r^(n-1) = Next Term
As stated above, the common ratio (r) between each term is 3. Furthermore, the next term in 55, 165, 495, 1485 is the fifth term (5), and the first term is 55. When we enter these values into our formula, we get the following answer:
55 × 3^(5-1) = 4455
Thus, the next number (term) in the sequence 55, 165, 495, 1485 is 4455. The tool below calculates the nth term of the sequence using the formula above. For example, type in 20 if you want the 20th term in the sequence 55, 165, 495, 1485, or 100 if you want the 100th term in the sequence 55, 165, 495, 1485.
Let's move on to our next question. What is the sum of the first 10 terms in the sequence 55, 165, 495, 1485? We use the formula below to calculate the sum of the first n terms in a geometric sequence such as 55, 165, 495, 1485. Again, note that the first term is "a", the common ratio is "r", and "n" is the nth term of the geometric sequence.
(a × (1 - r^n)) ÷ (1 - r) = Sum
When we enter the a, r, and n values into our formula, where n is equal to 10, we can calculate the sum of all numbers up through the 10th term in the sequence 55, 165, 495, 1485, as seen below:
(55 × (1 - 3^10)) ÷ (1 - 3) = 1623820
Therefore, the sum of all numbers up through the 10th term in the sequence 55, 165, 495, 1485 is 1623820. Below is another tool we created to make these calculations easier for you. This tool can calculate the sum of any number of terms in the sequence 55, 165, 495, 1485 using the formula mentioned above. For example, if you type in 15, then it will calculate the sum of the first 15 terms in the sequence 55, 165, 495, 1485.
Geometric Sequence Calculator
Go here to learn more about geometric sequences using the best online Geometric Sequence Calculator.
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