Question

write the formula to find sum of the nth term of Ap​

Answer 1

Answer:

Sum of natural numbers n(n+1)/2

Answer 2

Answer:

Sum of nth term of an AP is given by :

$\large \boxed{Sn \: = \dfrac{n}{2} (2a + (n - 1)d}$

where a = first term ; n = no. of terms ; d = common difference....

hope it helps.....!