How many five-digit numbers are there where an even number of the digits in the number are even?
How many five-digit numbers are there where an even number of the digits in the number are even?
Chapter9: Sequences, Probability And Counting Theory
Section9.1: Sequences And Their Notations
Problem 5SE: What is a factorial, and how is it denoted? Use an example to illustrate how factorial notation can...
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How many five-digit numbers are there where an even number of the digits in the number are even? For example, the number 12345 has two digits that are even, while 86420 has five digits that are even. So, the first number would be counted, but the second is not. Explain your answer, making sure to note which counting techniques are using (and which results on binomial coefficients you are also using).
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