   Chapter 8.1, Problem 65ES Mathematical Excursions (MindTap C...

4th Edition
Richard N. Aufmann + 3 others
ISBN: 9781305965584

Solutions

Chapter
Section Mathematical Excursions (MindTap C...

4th Edition
Richard N. Aufmann + 3 others
ISBN: 9781305965584
Textbook Problem

Clocks and Calendars. Use modular arithmetic to determine each of the following.If today is Friday.a. what day of the week will it be 25 days from now?b. what day of the week was it 32 days ago?

a.

To determine

To calculate: To determine that what day of the week will it be 25 days from now by using modular arithmetic

Explanation

Given information: The day given is Friday

Calculation:

Consider that today is Friday.

The day of the week 25 days from now can be determined by calculating (5+25)mod7 .

Add 5 and 25 to produce 30. Then divide by the modulus, 7.

The answer is the remainder.

4

7 )

b.

To determine

To calculate: To determine that what day of the week will it be 32 days ago by using modular arithmetic

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