Sa7uasugabbylorinMa Sa7uasugabbylorinMa
  • 04-04-2017
  • Mathematics
contestada

How many bit strings (strings of 0's and 1's are there of length 7 that have more 0's than 1's?

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LammettHash
LammettHash LammettHash
  • 04-04-2017
Any string containing at least 4 zeros and 3 ones will count. The total number is then

[tex]\dbinom74+\dbinom75+\dbinom76+\dbinom77=64[/tex]
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