A closet contains four pairs of shoes. If four shoes are chosen at random, what is the probability that the chosen shoes do not contain a pair?
What will be an ideal response?
The total number of combinations of four shoes that can be selected from eight is 
= 70. The four shoes will contain no pair if exactly one shoe is selected from each pair. Since each pair contains two shoes, the number of ways to select exactly one shoe from each pair is 
= 16. Therefore the probability that the four shoes contain no pair is 16/70, or 8/35.
You might also like to view...
What was the most important advantage Amazon had over brick and mortar retail stores?
A. Corporate partnerships B. New distribution channels C. Significant expertise with direct-to-customer shipping D. More methodical review systems
____________________ is the subgroup under genus
Fill in the blank(s) with the appropriate word(s).
Which of the following is true concerning detailed hazard analysis methodologies?
A. FEMA allows problems to be identified even before a body of experience has been developed for a system. B. HAZOP allows problems to be identified even before a body of experience has been developed for a system. C. HEA is a formal step-by-step analytical method that is a spin-off of reliability analysis. D. TOR is used to predict human error.
Where would you find inductive pulse generators in Eaton AMTs?
A. input shaft speed sensor B. output shaft speed sensor C. mainshaft speed sensor D. all of the above