Question

find the sum of first 8 multiples of 3

Answer 1

the first eight multiples og 3 are.......3,6,9....24
S8=n/2(a+an)
=8/2(3+24)
=4×27
=108
sum og first eight multiples of 3 is 108..

Answer 2

HEY , HERE'S THE ANSWER ⏬

According to the question,

✔️AP: 3 , 6 , 9 ........ , 24

$a_{1} = 3 \: \: \: d = 3 \\ n = 8$

✅Now ,

$s_{8} = \: \frac{8}{2}(6 + 21) \\ \: \: \: \: \: = 4(27) = 108$

➡️Therefore, the answer is 108 .

HOPE IT HELPS YOU ✌️!!