Snooze Button Dreams
Snooze Button Dreams
Snooze Button Dreams
January 23, 2004
A word problem to wake your brain
(Category: True Stories )

Say that you've forgotten to turn off your email at work so it continues to pull your emails when you go home. It is set to poll for email every 20 minutes, starting at 5 after the hour. Your computer at home looks for email every 10 minutes for the same address, starting at the top of the hour. If there are 12 emails sent to you during the time both computers are pulling email, how many of these would you expect to find on the computer at work the next day?

Points: 2 points to the first person with the correct answer. No wild guesses, please - you have to explain your reasoning.

Posted by Jim | Permalink
Comments

Chicago! The trains meet in Chicago!

See: the reasoning is thus-if one train leaves D.C. at 5:00 pm travelling at the speed of sound, and one train leaves Seattle at 3:00 pm travelling at the sound of a train travelling, then they meet in Chicago.

Word problems-fun for the whole damn family.

Can I get half a point for originality?

Posted by: Helen at January 23, 2004 09:44 AM

I'd give you a 1/2 point Helen, but your got it wrong. The trains meet in Philadelphia.

Posted by: Jim at January 23, 2004 09:50 AM

Its impossible to work out - we'd need to know at what times all the emails were sent, how long it takes you to get home, your shoe size, favourite flavour of ice cream and whether or not either computer is running outlook (in which case your work computer would be filled with 700,000 cleaned copies of the Booby Worm)

Now theoretically, there is only ever a five minute window of opportunity for the work computer so I'd have to say you'd only get 1 (or an equally low number) of the emails on that system but that is based on assumption rather than solid fact... and no I'd like to thank you for making me go cross eyed with your evil mathematical shenanigans ... bah.

Posted by: Robert at January 23, 2004 09:53 AM

and according to my calculations, the trains would meet in Starbuck's for a quick cappuccino and danish before embarking on a serious shopping spree in the new Gucci Rail Yard. I think I need to check my working.

Posted by: Robert at January 23, 2004 09:55 AM

Assume an even spread of emails over the time both computers are checking. Time to get home doesn't matter as the problem only deals with the 12 emails that were delivered while both computers were checking (I thought of that one too).

Posted by: Jim at January 23, 2004 09:57 AM

I wouldn't know because my Outlook pulls email every minute.Screw math...I know how much 1 and 1 is (11),therefore I plead the 5th.

Posted by: LW at January 23, 2004 10:16 AM

assuming all of the above you'd get exactly 1/4 of any email sent to the address so - 3 (based on data over 1 hour with 5 minute message interval)

Posted by: rob at January 23, 2004 10:20 AM

assuming all of the above you'd get exactly 1/4 of any email sent to the work address so - 3 (based on data over 1 hour with 5 minute message interval)

Posted by: rob at January 23, 2004 10:20 AM

Exactly correct, Rob.

Bonus point for the incident portion control formula if you've got it.

Posted by: Jim at January 23, 2004 10:25 AM

I saw this too late and Rob beat me AGAIN!

I don't know about a formula, I just did it the hard way:

H = 00 - 05
W = 05 - 10 = 05
H = 10 - 25
W = 25 - 30 = 05
H = 30 - 45
W = 45 - 50 = 05
H = 50 - 00

Work had 15 minutes, leaving Home with 45. 1/4 to 3/4.

12 * 1/4 = 3

Posted by: Clancy at January 23, 2004 10:34 AM

actually, it's a kind of gantt chart on the back of a Dilbert day to day calender - does that count? plus I don't know what the heck an incidentally controlled potion formula is or what it does. If you let me know I'll work one up for you.

Posted by: rob at January 23, 2004 10:35 AM

Dude.

You guys so need to get a life. Gantt charts and algebra for this? Sheesh.

Although Rob's Starbucks and train bit made me laugh.

Posted by: Helen at January 23, 2004 10:44 AM

hello - I work in IT! Gantt charts and algebra are my special friends and I talk to them every day ... then I go home to my real life. If this had been posted this evening I would have taken one look and thought "nah - can't be bothered" and gone to the pub instead...

righteous indignation*/

Posted by: rob at January 23, 2004 11:08 AM

Clancy - That's how I did most word problems back in school. Formulas? We don't need no stinking formulas.

Rob - That's probably the wrong term for it. It's calculus and the formula shows the portion of control of competing factors assuming constant incidents of interaction. It's used somewhere for something important I imagine, though I can't for the life of me think of where it would be useful.

Helen - There's life beyond mathematics? The hell you say! Actually, this all stemmed from a freaky math dream I had a few weeks ago. Yes, I have the occasional freaky math dream. It lodged in my head and wouldn't leave so I decided to share in an effort to exorcise it.

And gantt charts kick ass.

Posted by: Jim at January 23, 2004 11:35 AM

Rob, Jim and Clancy-you know I love you guys. I am just speaking out of math envy. Like penis envy only...with math.

Posted by: Helen at January 23, 2004 12:57 PM

My computer at work is configured to leave mail for my home account on the server. It will all be there when I get home. I do not have VPN privileges, so I can't check work mail from home. No math required.

{Now don't go and introduce reality into this. Ed.}

Posted by: triticale at January 24, 2004 07:49 AM

The real question is how much of it was spam. I'd say the correct answer is 100%.

Posted by: Simon at January 24, 2004 07:58 AM

You only get 12 emails overnight?

I get more than 200. And only half of that is spam. (Not that I see the spam, thanks to SpamAssassin. But I count the dead bodies in the morning.)

Posted by: Pixy Misa at January 25, 2004 07:15 AM

It was a hypothetical situation and it was assumed that SpamBayes or SpamAssassin was in place.

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