Telephone Numbers In the past, a local telephone number in a country consisted of a sequence of four letters followed by five digits. Three letters were associated with each number from 2 to 9 (just as in the standard telephone layout shown in the figure) so that each telephone number corresponded to a sequence of nine digits. How many different sequences of nine digits were possible? A 7 GHI PRS 2 ABC 5 8 sequences JKL TUV 3 DEF MNO 9 WXY

Telephone Numbers In the past, a local telephone number in a country consisted of a sequence of four letters followed by five digits. Three letters were associated with each number from 2 to 9 (just as in the standard telephone layout shown in the figure) so that each telephone number corresponded to a sequence of nine digits. How many different sequences of nine digits were possible? A 7 GHI PRS 2 ABC 5 8 sequences JKL TUV 3 DEF MNO 9 WXY

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.6: Counting Principles

Problem 21E: License Plate Numbers In the state of Pennsylvania, each standard automobile license plate number...

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