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10011001

in binary the last digit is worth 1 or 0

the 2nd last digit is worth 2 or 0

the 3rd last digit is worth 4 or 0

the 4 last digit is worth 8 or 0 etc etc

this means that add up the results gives 10011001 =

1 x 1 + 1x 8 + 1x 16 + 1 x 128 =

1 + 8 + 16 + 128

= 153

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13y ago

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