Question

answer these two questions..

don't copy..

no spam answer..

Answer 1

general form of A.P
a,a+d,a+2d.....
formula to find nth term is

a+(n-1)d= nth term of AP

Answer 2

Step-by-step explanation:

Arithmetic Progression:

It is a sequence in which each term except the first is obtained by adding a fixed number to the preceding term.

General form of an Arithmetic Progression:

a,a + d, a + 2d, a + 3d, a + 4d... Where 'a' is called an arithmetic progression and d is the common difference.

nth term of an Arithmetic progression:

an = a + (n - 1) * d

Sum of first n terms of an A.P:

= (n/2)[2a + (n - 1) * d]

= (n/2)[a + l]

Where,l = a + (n - 1) * d is the last terms of the A.P.

Hope it helps!