Question

1,-3,9,-27,81...........find the 7th term

Answer 1

(-3)^2, (-3)^3, (-3)^4 so the 7 term is (-3)^7

Answer 2

\[(-3)\]\[(-3)^{n}\] , n starts with 0 and goes 1,2,3... so for 7th therm is n=7-1=6\[(-3)^{6}=729\]

Answer 3

1 , -3 , 9 , -27 , 81 , -243 , and finally 7th 729

Answer 4

1,-3,9,-27,81,-243,729
ANS=729