How many 5-letter words can be formed using A, B, C, D, E, F, G, H, I, J, a) if the letters in each word must be distinct? b) if, in addition, A, B, C, D, E, F can only occur as the first, third or fifth letters while the rest as the second or fourth letters?
How many 5-letter words can be formed using A, B, C, D, E, F, G, H, I, J, a) if the letters in each word must be distinct? b) if, in addition, A, B, C, D, E, F can only occur as the first, third or fifth letters while the rest as the second or fourth letters?
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 39SE: How many arrangements can be made from the letters of the word “mountains” if all the vowels must...
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Transcribed Image Text:3. How many 5-letter words can be formed using A, B, C, D, E, F, G, H, I, J,
a) if the letters in each word must be distinct?
b)
if, in addition, A, B, C, D, E, F can only occur as the first, third or fifth
letters while the rest as the second or fourth letters?
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