How many Combinations 3-letter Possible from letters A, E, I, O, and 4?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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![How many
Combinations
letters
3-letter
Possible from
A, E, I, 0, and U?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa8cc5b47-1a8c-416c-961a-08ac39ec1d30%2F3ba816f2-8def-4732-abd2-d7f8e5df0b1f%2Fu43sjeb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:How many
Combinations
letters
3-letter
Possible from
A, E, I, 0, and U?
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I'm understanding the formula
n/(n-r)r but not sure how it ended up as 5×4×3×2 over 2×3. So far all we have to work on is the 5 vowels and 3 combos
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