Question
Which rule must be used to find the number of strings of four decimal digits that do not contain the same digit twice? The division
Which rule must be used to find the number of strings of four decimal digits that do not contain the same digit twice?
The division rule
The subtraction rule
The product rule
The sum rule
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Introduction to Real Analysis
Authors: Robert G. Bartle, Donald R. Sherbert
4th edition
471433314, 978-1118135853, 1118135857, 978-1118135860, 1118135865, 978-0471433316
