Question

What is the sum of the followinA.p if there are n term in the A.p? a, a+d , a+2d...,l

Answer 1

Step-by-step explanation:

Sum of n terms of an AP is given by:

$sn = \frac{n}{2} (2a + (n - 1)d)$

Or

$sn = \frac{n}{2} (a + an)$

Answer 2

Answer:

formula = n/2( 2a + ( n - 1 ) d )

Step-by-step explanation:

where n = n th term

a = first term

d = difference between 2nd term and first term

hope this is helpful