The nth term of an AP is given by an = n/2{2a + (n-1)xd}
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In a sequence, if the difference between two consecutive terms is same then the sequence is known as an A.P.
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The first term is known as " a " .
The common difference is known as " d " .
The sum of 'n' terms is given by :![\Large\sf\red{\underline{\fbox{\green{S_n = \frac{n}{2} [2a + (n - 1)d]}}}}](https://tex.z-dn.net/?f=%5CLarge%5Csf%5Cred%7B%5Cunderline%7B%5Cfbox%7B%5Cgreen%7BS_n+%3D+%5Cfrac%7Bn%7D%7B2%7D+%5B2a+%2B+%28n+-+1%29d%5D%7D%7D%7D%7D "\Large\sf\red{\underline{\fbox{\green{S_n = \frac{n}{2} [2a + (n - 1)d]}}}}")
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_______________________________________
In a sequence, if the difference between two consecutive terms is same then the sequence is known as an A.P.
_______________________________________
The first term is known as " a " .
The common difference is known as " d " .
The sum of 'n' terms is given by :
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