tn = 3n or 3*3* ... *3 (where there are n threes.)
9 3 1
3^n These are powers of 3
81
The first four terms are 3 9 27 81 and 729 is the 6th term.
42
For each term, multiply the previous by -3. So, 27*-3=-81. -81 is the next term.
The lowest term of 78 over 81 in fraction form is 26/27
1, 16, 81, 256 14641 is the 11th term.
26 over 27
81
The GCF of 27, 54 and 81 is 27.The GCF of 27, 54 and 81 is 27.
81/108 = 27/36 = 9/12 = 3/4