3) Let M be the set of all the words you can get by switching the letters in ENANNANANANAS How many words in M contain neither ANAS nor ENA? For example. SNANNANANANAE Bad words are for example ENANNANANANAS, SENANNANANANA, and NNNNENANASAAA.
3) Let M be the set of all the words you can get by switching the letters in ENANNANANANAS How many words in M contain neither ANAS nor ENA? For example. SNANNANANANAE Bad words are for example ENANNANANANAS, SENANNANANANA, and NNNNENANASAAA.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
![3)
Let M be the set of all the words you can get by switching the letters in
ENANNANANANAS
How many words in M contain neither ANAS nor ENA?
For example. SNANNANANANAE
Bad words are for example ENANNANANANAS, SENANNANANANA, and
NNNNENANASAAA.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcb712f34-edcf-46c1-8bf7-f101d7e764ca%2Fe42b2970-8646-4ebd-85ac-17f8042107a4%2F215a4ok_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3)
Let M be the set of all the words you can get by switching the letters in
ENANNANANANAS
How many words in M contain neither ANAS nor ENA?
For example. SNANNANANANAE
Bad words are for example ENANNANANANAS, SENANNANANANA, and
NNNNENANASAAA.
Expert Solution
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Step 1
Combination: It means the selection of items to determine the number of ways.
The factorial of n is obtained as
Also,
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