3^n
These are powers of 3
9 3 1
each time the number increases by 8 and the original number was 3.This means that nth term = 3+(n-1)8ie. the fourth term 27 would be 3 + (4-1)x8 = 3+24 = 27
The nth term is: n^2 +2 and so the next number will be 38
81 is a multiple of 3.
81
9 3 1
tn = 3n or 3*3* ... *3 (where there are n threes.)
81
The first four terms are 3 9 27 81 and 729 is the 6th term.
each time the number increases by 8 and the original number was 3.This means that nth term = 3+(n-1)8ie. the fourth term 27 would be 3 + (4-1)x8 = 3+24 = 27
The nth term is: n^2 +2 and so the next number will be 38
For each term, multiply the previous by -3. So, 27*-3=-81. -81 is the next term.
There is no pattern
The nth term is: 5-2n
81 is a multiple of 3.
after -9 it is -15 then -21, -27 and the ninth is -36
81