Welcome to my article **how to solve 1+2+3+4+5+6+7…..45**. This question is taken from the simplification lesson.

The solution of this question has been explained in a very simple way by a well-known teacher by doing addition, subtraction, and fractions.

For complete information on how to solve this question **how to solve 1+2+3+4+5+6+7…..45, **read and understand it carefully till the end.

Let us know how to solve this question **how to solve 1+2+3+4+5+6+7…..45**

First write the question on the page of the notebook.

**how to solve **1+2+3+4+5+6+7…..45

**To solve this question, first we will write it in this way.**

**We have to find the sum of this question “1+2+3+4+………………………+45”**

**By looking at this question, we get to know that,**

We have to find the sum of the first 45 natural numbers.

now,

**we know that,**

**To find the sum of n natural numbers, we use this formula –**

**Sum of n natural numbers = \displaystyle \text{ }\frac{{\left[ {\mathbf{n}\left( {\mathbf{n}+\mathbf{1}} \right)} \right]}}{\mathbf{2}} **

Here,

**n = last number = 45**

now,

{sum of n natural numbers = \displaystyle \frac{{\left[ {n\left( {n+1} \right)} \right]}}{2}}

Substituting the value of n = 45 in this formula,

we find,

Sum = \displaystyle \frac{{\left[ {45\text{ }\times \text{ }\left( {45+1} \right)} \right]}}{2}

= \displaystyle \frac{{\left[ {45\text{ }\times \text{ }46} \right]}}{2}

= 45 × 23

= 1035

Hence,

**1+2+3+4+…………+45 = 1035 [ Answer ]**

This article **how to solve 1+2+3+4+5+6+7…..45** has been completely solved by tireless effort from our side, still if any error remains in it then definitely write us your opinion in the comment box. If you like or understand the methods of solving all the questions in this article, then send it to your friends who are in need.

Note: If you have any such question, then definitely send it by writing in our comment box to get the answer.

Your question will be answered from our side.

Thank you once again from our side for reading or understanding this article completely.