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Sav [38]
3 years ago
6

How many bit strings of length 12 contain exactly three "1s"

Mathematics
2 answers:
Inessa [10]3 years ago
4 0
There are \dbinom{12}3=220 such strings, provided that the ordering of the bits doesn't matter.
xz_007 [3.2K]3 years ago
4 0
I  am     not     sure    of    the     answer    
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Use the reciprocal property to solve for x:
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marin [14]
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