Answer:
4096
Step-by-step explanation:
The n th term of a geometric sequence is
[tex]a_{n}[/tex] = a[tex](r)^{n-1}[/tex]
where a is the first term and r the common ratio
Here a = 1 and r = 2 ÷ 1 = 4 ÷ 2 = 2, thus
[tex]a_{13}[/tex] = 1 × [tex]2^{12}[/tex] = 4096