Posted by **Jaime** on Saturday, July 24, 2010 at 10:11am.

For some reason I can not get my head around probability. Please show me how to work the problem not just the answers.

A class has 11 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from shortest to tallest? (Assume that no two students are the same height.)

- math/probability -
**Reiny**, Saturday, July 24, 2010 at 10:21am
There are 11! ways to arrange the students.

One of these will be the correct order of shortest to tallest.

So the prob is 1/11! or 1/39916800

(I looked at it, as from shortest to tallest from the left, of course we could also have shortest to tallest from the right. In that case there would be TWO such cases and the prob would be be 2/11!

I will let you decide which interpretation is needed)

- math/probability -
**Jaime**, Saturday, July 24, 2010 at 10:26am
I was on that line of thinking as well but there are four possible answers and that doesn't match any of them. The four possible answers are:

A) 0.00000003 ; B) 0.1000 ; C) 0.00000025 ; and D) 0.00000028

I really want to understand how to work these problems but I am so lost.

- math/probability -
**Reiny**, Saturday, July 24, 2010 at 10:29am
1/39916800 = .000000025

## Answer This Question

## Related Questions

- Statistics - 1. In a certain game, the probability of getting a red outcome is 0...
- math check - Suppose that you are in a class of 31 students and it is assumed ...
- 5th grade math - A coin is tossed twice. What is the probability of tossing 2 ...
- Math Probability - A math class has 20 students who choose a topic from a list ...
- stats - Head lice can be a problem in classrooms. From the past experience, ...
- STATISTICS - Suppose that you are in a class of 29 students and it is assumed ...
- Stats - Suppose that you are in a class of 31 students and it is assumed that ...
- Statistics - Suppose that you are in a class of 31 students and it is assumed ...
- math probability - Formulate but do not solve the problem. A theater has a ...
- Math check answer - Suppose that you are in a class of 31 students and it is ...

More Related Questions