Question

what what is arithmetic arithmetic formula

Answer 1

airthematic formula's are as follows :

tn = [a+(n - 1) d]

where a= first term
d=common difference
n= number of terms

to find d the formula is a2 -a1/2

this is the formula which is mostly used in the A. P.

it may be hopeful for you .

Answer 2

Answer:

Step-by-step explanation:

tn=a+(n-1)d

a=first term

n=number of terms

d=comman difference

tn=last term

sn=n/2[2a+n-1]d