Billy was asked to express P(85,60) as aproduct of numbers without factorials so hewrote the following: 85*84*83...60.Explain if Billy is correct or not.

Answered: Billy was asked to express P(85,60) as…

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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I am choosing an integer. I then subtract 10 from the integer, take the opposite of the result, add -3, and find the opposite of the new result. My result is - 3. a) What is the original number? b) Judy wants to do the activity with her classmates. Each classmate probably chooses a different number and Judy wants to tell each classmate quickly what number was chosen. Judy figures out that the only thing she needs to do is to add 7 to each answer she gets. Does this always work? Explain why or why not. The original number is Will adding 7 to each answer always result in the original number? Explain. O A. Yes, let x be the number and a be the answer. Then the following is true. -[-(x + −10) + −3] = a -[-x+ 10 + −3] = a -(-x + 7) = a x + 7 = a x = a +7 B. No, let x be the number and a be the answer. Then the following is true. -[-(x+10)+ - 3] = a -[-x + 10 +3] = a -(-x+13) = a x+13=a x = a + 13
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Billy was asked to express P(85,60) as a product of numbers without factorials so he wrote the following: 85*84*83...60. Explain if Billy is correct or not.

Billy was asked to express P(85,60) as a product of numbers without factorials so he wrote the following: 858483...60. Explain if Billy is correct or not.