Table of Contents

- 1 Is 47 a triangular number?
- 2 What do you call a sequence having a finite number of terms?
- 3 Is 48 a triangular number?
- 4 Is zero a triangular number?
- 5 Which of the following is a triangular number?
- 6 What are sequence numbers?
- 7 Is 2015 a triangular number?
- 8 What is the triangular number sequence?
- 9 What is the sum of all triangular numbers?
- 10 How do you find the number of dots in a sequence?

## Is 47 a triangular number?

The odd triangular numbers are given by 1, 3, 15, 21, 45, 55. (OEIS A014493), while the even triangular numbers are 6, 10, 28, 36, 66, 78.

## What do you call a sequence having a finite number of terms?

The length of a sequence is defined as the number of terms in the sequence. A sequence of a finite length n is also called an n-tuple.

**What is the pattern of triangular numbers?**

The triangular number sequence is the representation of the numbers in the form of equilateral triangle arranged in a series or sequence. These numbers are in a sequence of 1, 3, 6, 10, 15, 21, 28, 36, 45, and so on. The numbers in the triangular pattern are represented by dots.

### Is 48 a triangular number?

This is the Triangular Number Sequence: 1, 3, 6, 10, 15, 21, 28, 36, 45. The first triangle has just one dot.

### Is zero a triangular number?

0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666…

**Are triangular numbers a geometric sequence?**

These are called the triangular numbers since they represent the number of dots in an equilateral triangle (think of how you arrange 10 bowling pins: a row of 4 plus a row of 3 plus a row of 2 and a row of 1). Is this sequence arithmetic?…Solution.

S | =2+10+50+⋯+2⋅5n |
---|---|

−4S | =2−2⋅5n+1 |

## Which of the following is a triangular number?

0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666… (This sequence is included in the On-Line Encyclopedia of Integer Sequences (sequence A000217 in the OEIS).)

## What are sequence numbers?

A sequence is a list of numbers in a certain order. Each number in a sequence is called a term . Each term in a sequence has a position (first, second, third and so on). For example, consider the sequence {5,15,25,35,…} In the above sequence, the nth term an can be calculated using the equation an=10n−5 .

**What are the first triangular numbers?**

1

A triangular number is a number that can be represented by a pattern of dots arranged in an equilateral triangle with the same number of dots on each side. The first triangular number is 1, the second is 3, the third is 6, the fourth 10, the fifth 15, and so on.

### Is 2015 a triangular number?

This is the Triangular Number Sequence: 1, 3, 6, 10, 15, 21, 28, 36, 45.

### What is the triangular number sequence?

This is the Triangular Number Sequence: 1, 3, 6, 10, 15, 21, 28, 36, 45,… It is simply the number of dots in each triangular pattern: By adding another row of dots and counting all the dots we can

**What is the number of dots in each triangular pattern?**

1, 3, 6, 10, 15, 21, 28, 36, 45, It is simply the number of dots in each triangular pattern: find the next number of the sequence. The first triangle has just one dot.

## What is the sum of all triangular numbers?

Sum of Triangular Numbers 1 First number is 1 2 In number 2, a row is added with two dots to the first number 3 In number 3, a row is added with three dots to the second number 4 Again, in number 4, a row is added with four dots to the third number and so on More

## How do you find the number of dots in a sequence?

This is the Triangular Number Sequence: It is simply the number of dots in each triangular pattern: By adding another row of dots and counting all the dots we can. find the next number of the sequence. The first triangle has just one dot. The second triangle has another row with 2 extra dots, making 1 + 2 = 3.