You have to start at the first number on the right. In other words:

When using binary it mainly is saying yes or no, 1 meaning yes, and 0 meaning no.

11001=25

Breakdown:

1=2^4 or 16

1=2^3 or 8

0=none.. If 1 then it would be 2^2 or 4

0=none.. If 1 then it would be 2^1 or 2

1=2^0 or 1

now add the numbers and you get 25.

Each time you go up from your binary code you add 1 to the power.

It's always 2^x.

When using binary it mainly is saying yes or no, 1 meaning yes, and 0 meaning no.

11001=25

Breakdown:

1=2^4 or 16

1=2^3 or 8

0=none.. If 1 then it would be 2^2 or 4

0=none.. If 1 then it would be 2^1 or 2

1=2^0 or 1

now add the numbers and you get 25.

Each time you go up from your binary code you add 1 to the power.

It's always 2^x.