Question
Asked Jun 15, 2019
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6.2.2

Show that if there are 30 students in the class, and at least 2 have a last name that begin with the same letter.

26/30?

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Expert Answer

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Step 1

Consider the provided statement that there are 30 students in a class then at least two have last names that begin with the same letter.

Step 2

Now let us assumed that each of the student has at least a last name and a first name.

Last name of each student has to begin with a letter of the alphabet.

Step 3

Therefore...

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Number of objects = First letter of each last name

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