In the sequence 2,6,18,..., which term is number 162? 162 = 2 x 3^(n -1) is this how you start it? then i get 81 = 3^(n-1) how do i solve that without using a calculator?
Follow Math Help Forum on Facebook and Google+
simply try to find out: 3^1 = 3 < 81 3^2 = 9 < 81 3^3 = 27 < 81 etc.
Originally Posted by NeedHelp18 In the sequence 2,6,18,..., which term is number 162? 162 = 2 x 3^(n -1) is this how you start it? then i get 81 = 3^(n-1) how do i solve that without using a calculator? $\displaystyle t_5 $
View Tag Cloud