COT3100 HW 12 - Lauren Safran Kevin McDonald Rey Olivo...

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Lauren’Safran ’ Kevin’McDonald ’ Rey’Olivo ’ COT3100’ ’ Homework’12 ’ 6.1 2.’ 27*37’=’999’Offices’in’the’building 8.’ 26*25*24’=’15600’ways’to’make’3’different’lettered’initials’ 10.’ Due’to’the’fact’that’each’bit’does’not’depend’on’another’bit,’the’possible’bit’ strings’of’length’8’are’counted’using’the’product’rule. Therefore,’the’number’of’bit’strings’of’length’8’is’2 8 =256’ 16.’ The’number’of’possible’strings’with’four’lowercase’letters’in’them’is’26 4 .’ The’number’of’possible’strings’with’four’lowercase’letters’in’ them’that’do’not’ contain’x’is’25 4 .’26 4 -25 4 ’ =’ 66351,’which’is’the’number’of’possible’strings’with’four’ lowercase’letters’in’them’that’have’the’letter’x.’ 32.’ a.’if’letters’can’be’repeated:’26 8 ’ =’ 208827064576’ b.’if’letters’cannot’be’repeated:’26*25*24*23*2
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COT3100 HW 12 - Lauren Safran Kevin McDonald Rey Olivo...

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