1. In how many ways can 3 boys and 4 girls sit in a row if a. they are to sit alternately? b, the boys and girls are to sit together? 2. How many ways can 10 books be arranged in a shelf if one of them is a bible and it must be placed on the rightmost end? 3. There are 7 finalists for a Mathematics contest, and medals will be given to the top 3 finalists. How many ways are there for the medal winners to be selected?
1. In how many ways can 3 boys and 4 girls sit in a row if a. they are to sit alternately? b, the boys and girls are to sit together? 2. How many ways can 10 books be arranged in a shelf if one of them is a bible and it must be placed on the rightmost end? 3. There are 7 finalists for a Mathematics contest, and medals will be given to the top 3 finalists. How many ways are there for the medal winners to be selected?
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 40SE: A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in...
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Answer number 1 to 3 pls.
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