# How to find Sum of First N Terms of an Arithmetic Sequence – First Term and N Given

**How to find Sum of First N Terms of an Arithmetic Sequence – First Term and N Given**

** In previous video lesson we learned the formula for the sum of the arithmetic progression or sum of arithmetic sequence.**

**Now in this video lesson we are going to learn application of the sum of nth term of an Arithmetic progression formula.**

**Let me write the formula for sum of nth term of an Arithmetic progression once again here:**

** 1. Sum of n terms of Arithmetic progression = [n {2a + (n-1)d} ] /2**

** 2. Sum of n terms of Arithmetic progression = [n(a + l )]/2**

** Now, lets learn the application of the formula. I hope you are watching this video with pen and note book with you.**

** If you feel small screen size then please view it in full screen it will be nice.**

** Let’s begin.**

**Well how was it friend?**

** Here in this problem we have got the first term, common difference and total number of terms in Arithmetic progression. We need to find the sum of this Arithmetic progression.**

**Just put all the values in the formula Sum of n terms of AP = [n {2a + (n-1)d} ] /2 one by one you will get the sum of the arithmetic sequence.**

**Here are some exercise based on the sum of n term of the arithmetic progression. Please try to solve these problems it will really boost you in the topic. If you feel any problems please comment .**

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