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Re: [Phys-L] From a Math Prof (physics BS major) at my institution ( math challenge)



Each set of five numbers in the first set is listed in numerical order from smallest to largest. Thus, I think the first group was student generated.

-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@phys-l.org] On Behalf Of Paul Nord
Sent: Monday, February 17, 2014 12:28 PM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] From a Math Prof (physics BS major) at my institution (
math challenge)

That's easy.

The first group is the real lottery numbers. It is more uniformly distributed.

In the second set, the student-generated numbers, numbers in the 20's are
much preferred.

Paul


On Feb 17, 2014, at 10:33 AM, Rauber, Joel <Joel.Rauber@SDSTATE.EDU>
wrote:

The below may be tangentially related to discussions of entropy (See
subject heading)


I asked my Math 316 (Discrete Math) to randomly pick 5 numbers from 1 to
35. This is the same as the "South Dakota Cash Lottery" that has drawings
twice a week. I told them that I would compare their "random" numbers to
actual numbers drawn in the lottery. They were instructed to try to make
their numbers as random as possible so they looked just like the real random
numbers. I had 21 responses, they are in one of the two lists below. The
other list is the numbers drawn in the lottery from Dec 7, 2013 to Feb 15,
2014. Can you tell which list is the student's list? Hint: there is an easy,
almost trivial, way to do this, or least to locate the most likely student list.


02-06-07-25-34
03-09-12-15-34
06-16-21-28-32
06-10-13-21-23
04-18-26-27-34
03-06-17-27-32
03-11-21-22-35
01-02-08-17-27
07-12-14-24-31
03-07-14-18-27
07-13-22-25-31
07-12-23-31-32
04-17-18-22-35
08-15-17-20-25
12-16-18-29-34
02-07-11-16-21
08-23-24-32-35
17-19-23-29-31
09-16-27-28-32
06-15-19-26-32
06-13-15-23-31



11-17-19-28-31
03-11-29-32-35
14-21-24-28-33
09-14-22-23-31
03-21-26-30-31
05-15-20-27-29
02-23-24-25-26
07-13-20-24-25
03-23-26-27-28
06-20-21-26-29
01-10-14-19-35
12-18-27-32-35
02-06-24-27-28
03-08-11-21-30
09-14-20-25-31
04-13-19-21-28
10-11-12-21-31
02-07-11-20-24
06-17-25-29-30
13-23-24-26-34
09-17-21-25-26
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