How many 7-letter words contain exactly 2 vowels? (For example, an 8-letter word with 5 vowels is"aaioobtt"; don't consider "y" a vowel for this exercise.)What if repeated letters were not allowed?BA

To find the number of words contain exactly two vowels :-

Answered: How many 7-letter words contain exactly…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.6: Counting Principles

Problem 8ECP: In how many different ways can two letters be chosen from the letters A, B, C, D, E, F, and G? (The...

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How many 7-letter words contain exactly 2 vowels? (For example, an 8-letter word with 5 vowels is "aaioobtt"; don't consider "y" a vowel for this exercise.) What if repeated letters were not allowed?