In Problems 57 - 60 , discuss the validity of each statement. If the statement is true, explain why. If not, give a counterexample. If n is a positive integer greater than 1 , then u n − n n can be factored.
In Problems 57 - 60 , discuss the validity of each statement. If the statement is true, explain why. If not, give a counterexample. If n is a positive integer greater than 1 , then u n − n n can be factored.
Two people proofread the same book. One person finds 100 errors while the second finds 60
errors. There are 20 errors common to both people. Assume that all errors are equally likely to
be found, and also that the discovery of an error by one person is independent to the discovery
of that error by the other person. Given these assumptions, roughly how many errors does the
book have?
Note that your answer will be an integer, so write your answer as such (i.e. your answer should
only contain digits. Do NOT include any other characters)
A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of six digits. The first digit cannot be 4 and the last digit must be even.
How many different codes are available? (Note that 0 is considered an even number.)
The number of different codes available is
A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of four digits. The first digit cannot be 8 and the last digit must be even. How many different codes are available? (Note that 0 is considered an even number.)
The number of different codes available is
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Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
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