Find the sum of the given arithmetic series. 24 + 48 + 72 + 96 +...+ 480

5040

Step-by-step explanation:

The given series is :

24 + 48 + 72 + 96 +...+ 480

The first term, a= 24

Common difference, d = 24

The last term,

Let there are n terms in the AP.

So,

There are 20 terms in the series. The sum of 20 terms is :

So, the sum of the given arithmetic series is equal to 5040.

x/3-10=8

x/3=18

x=48

(23*2)-12=x     x=34

step-by-step explanation: