Given an integer n ≥ 1, how many strings of n letters of theEnglish alphabet (26 letters) begin and end with the same letter?○ 26"-26(26-1)None of these.26-1ο ο ο ο ο26-2○ 28-1-26-2

Answered: Given an integer n ≥ 1, how many…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

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Given an integer n ≥ 1, how many strings of n letters of the English alphabet (26 letters) begin and end with the same letter? O26-26(26-1) None of these. 26-1 26-2 O O 26-1-28-2