Consider lists made from the letters T, H, E, O, R, Y, with repetition allowed. (a) How many length-4 lists are there? (b) How many length-4 lists are there that begin with T? (c) How many length-4 lists are there that do not begin with T?
Consider lists made from the letters T, H, E, O, R, Y, with repetition allowed. (a) How many length-4 lists are there? (b) How many length-4 lists are there that begin with T? (c) How many length-4 lists are there that do not begin with T?
Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Transcribed Image Text:1. Consider lists made from the letters T, H, E, O, R, Y, with repetition allowed.
(a) How many length-4 lists are there?
(b) How many length-4 lists are there that begin with T?
(c) How many length-4 lists are there that do not begin with T?
Expert Solution

Step 1
Introduction:
An arrangement of things in a very specific order is remarked as a permutation. Here, the components of sets are arranged in a linear or sequential order. While the order of the ingredients doesn't important together, it should be followed while performing permutations.
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