Question

For the geometric series 1 + 3 + 9 + 27 + . . . , find the sum of the first 10 terms

Answer 1

a=1
r=3/1=3
\[S10=\frac{ a \left( 1-r ^{10} \right) }{1-r }\]
calculate

Answer 2

A. 19,683 B. 29,523 C. 29,524 D. 88,573

Answer 3

1+3+9+27+81+243+729+2187+6561+19683=29,524

I know there is a formula..but i didn't know it so that i did....multiply its basically 3 times table...Like 1 x 3=3.
3 x 3 =9
9 x 3=27
27 x 3 81 and etc

Answer 4

thanks

Answer 5

yw! :)