# Find the Sum of n terms of Arithmetic Sequence a = 1, n=78, and d=4

Make use of our handy arithmetic sequence calculator and Find the Sum of n terms of Arithmetic Sequence a = 1, n=78, and d=4. After clicking on the calculate button you will get the desired output i.e. 12090.0 for the given inputs in a matter of seconds.

First term [a]:
common difference[d]:
Total terms[n]:

### Steps to find sum of n terms of arithmetic sequence:

sum of n terms of arithmetic sequence formula:-

where:
• sn is the sum of n terms
• a is first term
• n is total number of terms
• d is common difference
Input values are:-

a = 1

n = 78

d = 4

Put values into formula

S78 = n/2 (2a+(n−1)d)

S78 = 78/2 * ( 2*1 + ( 78 - 1)*4 )

S78 = 12090.0

## Step by Step Process for Finding Sum of n terms of Arithmetic Sequence a = 1, n=78, and d=4

Here is the detailed procedure to find the sum of first n terms of Arithmetic Sequence a = 1, n=78, and d=4. Let’s jump into the process and learn the calculation along with the output of sum of n terms of AP:

• At first, we need to figure out the given values to find the sum of first n terms of AP ie., a = 1, n=78, and d=4.

• Now, take the sum of n terms of Arithmetic progression formula ie., S = n/2 * [2a₁ + (n-1)d] and substitute the input values.

• After that, we get S = 78/2 * [2(1) + (78-1)4].

• Now, simply the above expression to get the sum of first n terms of Arithmetic sequence for a = 1, n=78, and d=4 is S5 = 12090.0

## FAQs on How to find Sum of n terms of A.P for a = 1, n=78, and d=4

1. Where Can I Find the Sum of n terms of Arithmetic Sequence a = 1, n=78, and d=4?

You can Find the Sum of n terms of Arithmetic Sequence a = 1, n=78, and d=4 from our online tools ie., arithmetic sequence calculator.

2. Do I Get the Result for the Sum of n terms of A.P for a = 1, n=78, and d=4 easily using a calculator?

Yes, you will get the Result for the Sum of n terms of A.P for a = 1, n=78, and d=4 easily using our handy arithmetic calculator tool. The output is S5 = 12090.0

3. What is the formula for finding the sum of n terms of arithmetic progression?

The formula for determining the sum of n terms of arithmetic progression is S = n/2 * [2a₁ + (n-1)d].