1. How many bit strings(strings of 1 or 0) of length 10 are there such that it contains exactly 51s?Hint: To write a bit string of 5 1s, we put 1s into 5 of 10 positions of the string, and let theother positions be 0. How many ways to do this?2. How many bit strings(strings of 1 or 0) of length 6 are there such that it contains at least 31s?

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Answered: 1. How many bit strings(strings of 1 or…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.5: Counting Principles

Problem 36SE: The number of 5-element subsets from a set containing n elements is equal to the number of 6-element...

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1. How many bit strings(strings of 1 or 0) of length 10 are there such that it contains exactly 5 1s?