### Instruction: How many two-digit numbers can be written in the form $2^n$ where $n$ is an integer?### Response: I want to find all the powers of 2 that have two digits.
The smallest power of 2 that has two digits is $2^4 = 16$.
The largest power of 2 that has two digits is $2^6 = 64$.
So the possible values of $n$ are 4, 5, and 6.
That means there are three two-digit numbers that can be written in the form $2^n$.