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To use an automated teller machine at a certain bank, you must enter a 6-digit code, using the digits 1-9. How many 6-digit codes
To use an automated teller machine at a certain bank, you must enter a 6-digit code, using the digits 1-9. How many 6-digit codes are possible if repetition of digits is permitted?
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Riemannian Geometry
Authors: Peter Petersen
3rd Edition
3319266543, 9783319266541
