Binary Finger Counting: 20 to 25
The thumb represents the value 1, the index is double that, so it's 2, and the middle is double the index, so it's 4, etc. This is key to understanding and fluently counting in binary on your fingers.

To make the number 23 for instance, you have to combine the 16 finger, the 4 finger, the 2 finger and the 1 finger (16+4+2+1=23).

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Copyright 1995 By: John Selvia