Binary practice

Match it! Select the correct answer from the pull down...Good luck!

How do you write 28 in binary?

What is the value of this binary string? 11011

How do you write 2 in binary?

What is the value of this binary string? 01001

What is the value of this binary string? 11111

What is the value of this binary string? 10011

How high can you count with one byte?

How do you write 18 in binary?