Concept explainers
Underhanded friend. Now you friend shows, you a new list of three five digit numbers, again with only a few digits revealed:
6????
?5???
?????
Can you describe a five-digit number you know for certain will not be on her list? If so, give one; if not, explain why not.
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Check out a sample textbook solutionChapter 3 Solutions
The Heart of Mathematics: An Invitation to Effective Thinking, WileyPLUS NextGen Card with Loose-leaf Set Single Semester: An Invitation to Effective Thinking (Key Curriculum Press)
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