Question

Write down
the
formula far
som of n
terms​

Answer 1

Step-by-step explanation:

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

i hope it helps uu

tq .....

Answer 2

Answer:

An example of AP is natural numbers, where the common difference is 1. Therefore, to find the sum of natural numbers, we need to know the formula to find it.

...

Sum of N Terms of AP And Arithmetic Progression.

Sum of n terms in AP     -         n/2[2a + (n – 1)d]

Sum of natural numbers -     n(n+1)/2

Hope it is helpful.