The number of pages that Zev, Kelly, Marneisha, and Aleisha can read in a day is shown below.
2 answers:
Answer with explanation:
⇒Number of Pages Read by Zev of his 56 Page book in a day=15 %
Total number of pages read by Zev in a day
= Approximately 8 Pages
⇒Number of Pages Read by Kelly of his 64 Page book in a day=12 %
Total number of pages read by Kelly in a day
= Approximately 7 Pages
⇒Number of Pages Read by Marneisha of his 68 Page book in a day=14 %
Total number of pages read by Marneisha in a day
= Approximately 9 Pages
⇒Number of Pages Read by Aleisha of his 72 Page book in a day=10 %
Total number of pages read by Aleisha in a day
= Approximately 7 Pages
⇒Marneisha Read greatest number of pages in a day.
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<h3>Answer: 120 different ways</h3>
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Explanation:
There are...
- 6 ways to select the first place winner
- 5 ways to pick the second place winner
- 4 ways to pick the third place winner
We start with 6, and count down by 1 each time we fill up a slot. We stop once the third slot is filled or accounted for. The countdown is to ensure that we don't pick the same person twice. From here, multiply those values: 6*5*4 = 30*4 = 120
Interestingly, this is equal to 5! = 5*4*3*2*1 = 120 because the 3*2 becomes 6 and that *1 at the end doesn't affect things. Though usually results of permutation problems don't always end up like this. The order matters because a result like ABC is different from BAC, where A,B,C,D,E,F are the six school organizations.
As a slightly longer way to do the problem, you can use the nPr formula which is where n = 6 and r = 3 in this case. The exclamation marks indicate factorial. If you go this route, you should find that one of the steps will involve 6*5*4.