Question

Find the sum of the given arithmetic series.

24 + 48 + 72 + 96 + ... + 480
a.
5280
c.
10080
b.
9576
d.
5040

Answer 1

\[480 = 24+ (n - 1) 24 \]

Answer 2

\[S_n = \frac{ 19(24+480) }{ 2 } = ?\]

Answer 3

4788

Answer 4

doesn't seem to be in your option

Answer 5

nope

Answer 6

weird lol

Answer 7

try the maths again maybe it was a miscalculation

Answer 8

true enough

Answer 9

its \[S _{20} = \frac{ 20(24+480) }{ 2 } =5040\]

Answer 10

i think thats it

Answer 11

thank you

Answer 12

yw