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Binary fingers
1. Right Hand
With just your right hand you can count to
31:
No fingers = 0 Thumb = 1 Index finger = 2 2 + 1 = 3
Middle finger = 4 Add your thumb for 5 4 & 2 = 6 4 + 2 + 1 = 7
Fourth Finger = 8
... and continue the pattern:
add your thumb (+1) to make 9,
or add your index finger (+2) to make 10
or add thumb (+1) and index finger (+2) to make 11
Binary Fingers
Reference: http://www.mathsisfun.com/numbers/binary-
count-fingers.html