A survey of 534 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night.  It found: 169 watched TV 150 hung out with friends 32 watched TV and ate pizza, but did not hang out with friends 38 watched TV and hung out with friends, but did not eat pizza 34 hung out with friends and ate pizza, but did not watch TV 26 watched TV, hung out with friends, and ate pizza 91 did not do any of these three activities How may 18-24 year olds (of these three activities) only ate pizza last Friday night?

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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A survey of 534 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night.  It found:

  • 169 watched TV
  • 150 hung out with friends
  • 32 watched TV and ate pizza, but did not hang out with friends
  • 38 watched TV and hung out with friends, but did not eat pizza
  • 34 hung out with friends and ate pizza, but did not watch TV
  • 26 watched TV, hung out with friends, and ate pizza
  • 91 did not do any of these three activities

How may 18-24 year olds (of these three activities) only ate pizza last Friday night?

 

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