Question

write the formula to find the sum of n term an ap when the first term a and last term d is given​

Answer 1

Answer:

2/3 × 3/5.= $@%&*-|+~-#;*|-~&#9|+#9-₹*#+'*#/'×#/{|('=~

Answer 2

Answer:

S=2n[2a+(n-1)d}

Step-by-step explanation:

here n=number of terms in series

       a=first term of AP

       d=common difference

i hope you understand that

please mark my answer as brainlist answer