A child psychologist prepares four-letter words to be used in a memory test. How many words can she construct if she does not repeat letters and limits her choices to the letters a, b, d, e, i, l, o, and p? how many of these words begin with the letter a? how many have vowels as the second and fourth letters?

A child psychologist prepares four-letter words to be used in a memory test. How many words can she construct if she does not repeat letters and limits her choices to the letters a, b, d, e, i, l, o, and p? how many of these words begin with the letter a? how many have vowels as the second and fourth letters?

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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