Question

Sn=a+(n-1)d by using this formula which problems can we solve !!give one example problem​

Answer 1

Answer:

With this formula we can solve the problems of arithmetic progression

Step-by-step explanation:

Example:

If we have given:

a (first term)= 1

d (common difference)= 2

n ( the no. of the term in the arithmetic progression)= 3

So by this information we have to find the 3rd term in the arithmetic progression by using the first term, difference between each term and the no. of the term.

Sn= a+(n-1)d

Sn= 1+(3-1)2

Sn= 1+(2)2

Sn= 1+4

Sn= 5

So, the third term in the arithmetic progression of this sum is 5