Question

The last term of the series 1,-3,9,-27 up to 7 term is ​

Answer 1

Answer:

81,_243 ,729,_2181,6543 ,_19629,58887

Answer 2

Step-by-step explanation:

r= -3/1 = -3

according to formula,

tn= ar^n-1

=1*-3^7-1

= -3^6

= 729

ans : 729