1. How many 3-letter words with or without meaning, can be formed out of the letters of the word, 'MACHINE', if repetition of letters is not allowed? 2. In a group of 8 boys and 5 girls, four children are to be selected, In how many different ways can they be selected such that at least one boy should be there?

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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1. How many 3-letter words with or without meaning, can be formed out of the
letters of the word, 'MACHINE', if repetition of letters is not allowed?
2, In a group of 8 boys and 5 girls, four children are to be selected, In how many
different ways can they be selected such that at least one boy should be there?
Transcribed Image Text:1. How many 3-letter words with or without meaning, can be formed out of the letters of the word, 'MACHINE', if repetition of letters is not allowed? 2, In a group of 8 boys and 5 girls, four children are to be selected, In how many different ways can they be selected such that at least one boy should be there?
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