Question

There are □ terms in the sequence 1,2,2

Answer 1

There are exactly 81 terms in the sequence.

Start counting with 1 (like non-computer people).

First term is $1=2^0$.

Second term is $2=2^1$.

Third term is $2^2$.

Fourth term is $2^3$.

In general the i-th term is $2^{i - 1}$.

Hope this helps :)