There are 21 students in a class. What is the probability that: a) at least two students share the same birthday? b) at least two students share the same birth month? c) they come into the classroom in ascending order of age from youngest to oldest?

There are 21 students in a class. What is the probability that: a) at least two students share the same birthday? b) at least two students share the same birth month? c) they come into the classroom in ascending order of age from youngest to oldest?

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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