Question

Find the sum of first 8 terms of AP where first
term is 3 and common difference is 6.​

Answer 1

Step-by-step explanation:

a=3 c.d=6

so sum of first 8 terms=8/2{2×3+(8-1)6}

sum of first 8 terms=4(6+42)

sum of first 8 terms=4×48

=192