Question

For the geometric series 4+20+100+500 what is the value of a3?

Answer 1

its the sume of the first 3 terms=124

Answer 2

i dont thinkk it is

Answer 3

a3 should just be the third term, a_3

Answer 4

....

Answer 5

Maybe you mean what is the number 3 spaces after 500? because from what i remember a_3 represented the third term of a series. s_3 the summation of the first 3 terms

Answer 6

ill screenshot the question

Answer 7

nvm its 100

Answer 8

how did u get 100?

Answer 9

Thats what i put first its asking what is the third term of the series which is a sum of numbers with a common ration to each other which 5, multiply 5 by 4 you get 20, then you get 100, then 500

Answer 10

these numbers are known as the terms and in series they're denoted by by a1, a2, a3 which what they're asking for the 3rd term 100