Averages and Probability#2
(1) Emmett put 10 spinners in front of him. The first one has the number 1, The second one has the numbers 1-2. The third one has the number 1-3 and so on. (2) He adds up the numbers on all the spinners and then divides that number by 4.07 and rounds to the nearest whole number. (3) Then spins the spinners. (4) He adds up the numbers spun on the spinners. (5) He calculates the probability of getting the number in (2), simplifies the result, and calculates the reciprocal, and rounds to the whole number. What is that number?
The answer is 403200.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
the number in (2) is 54. the probability of spinning the spinners and having them add up to 54, simplified, is 1/403200. The reciprocal of that number is 403200 so that is your answer.