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2 problems of combinations and permutations.

How many unique ways are there to put X rocks into Y boxes? (Given two different sets of attributes for both the rocks and the boxes.) [more inside]
posted by CustooFintel on Jun 4, 2014 - 18 answers

Help me with a permutations probability problem.

I'm an answer-checker who is rusty at probability. Can you solve this problem? What is the probability that a random arrangement of the letters in the word THRUSTS will have the two T's next to each other? [more inside]
posted by 23skidoo on Mar 27, 2014 - 11 answers

Non-intuitive food combinations that work

So when I was little I was the weird kid who mixed up food in weird and non-intuitive ways that grossed out many of my peers, but many of those combinations, discovered through largely blind trial and error, turned out to work really well - What are ones that you've discovered? [more inside]
posted by Blasdelb on Nov 2, 2012 - 132 answers

Show me how to flip a coin 15 times and tell me all 32,768 possible outcomes

How do I find every possible outcome of an arbitrary length set of coin flips? [more inside]
posted by mcstayinskool on Mar 22, 2012 - 8 answers

Don't meet the same person twice (involves math ... somehow)

36 people total, meeting in groups of 6. After 5 minutes, the groups shuffle into completely new groups. How many "rounds" can we go without people meeting with someone they've already met? [more inside]
posted by foggy out there now on Jul 31, 2010 - 27 answers

unique combinations

I have a list of 6 items. I need to make a list of unique combinations where 3 items are taken from the list in any order and the 4th item is also taken from the same list but cannot be one of the 3 items already selected [more inside]
posted by missmagenta on Jun 18, 2010 - 13 answers

Two great tastes that taste terrible together

What are some terrible flavor combinations? [more inside]
posted by molybdenum on May 7, 2010 - 92 answers

Pick my lock, please

Help me tear-apart, clean and reset my combination lock. [more inside]
posted by Thorzdad on Oct 30, 2009 - 5 answers

Permutations: an extension of the odd sock problem

I've annoyed myself by getting stuck attempting to work out a silly maths problem relating to permutations. It's an extension of the 'how many odd socks do I have to pull out of a drawer before I find a pair' problem. Only my theoretical sock-wearer has three legs. And a penchant for odd socks. [more inside]
posted by Beautiful Screaming Lady on Sep 1, 2009 - 7 answers

Where are custom settings stored in Word 2000?

What file are settings (created macros, custom toolbar buttons, etc.) stored in in Word 2000? [more inside]
posted by roxie110 on Jan 18, 2009 - 2 answers

Movie Treats!

What movies and treats go together? [more inside]
posted by Sassyfras on Sep 19, 2008 - 45 answers

Help me play with my image collection!

I have a large image collection that I use for illustration reference. Are there any programs (I have a mac, but could get access to a PC if there's something cool) that can play with large collections of images in unexpected ways? [more inside]
posted by apetpsychic on Apr 8, 2008 - 6 answers

Math help for the right brained

I have a math question involving combinations and sets. [more inside]
posted by sonofslim on Apr 28, 2007 - 21 answers

Website that will create combinations?

I'm working on a presentation for a public speaking class, and my chosen topic is group choice. Is there a website (or program) that I could use to generate all possible preference orderings for a specific set of preferences? [more inside]
posted by almostbarefoot on Feb 12, 2007 - 3 answers

Balls in boxes algorithm

Is there a standard ball picking algorithm? I have 10 balls that I want put in four boxes (A-D). Every box can hold zero to all balls. [more inside]
posted by davar on Feb 9, 2007 - 10 answers

Catch a cheater by the toe...

How can one cheat and predict the outcome of eenie meenie miny moe? [more inside]
posted by snailer on Jan 29, 2007 - 17 answers

Yummy yummy in my tummy

Quick & healthy food pairing suggestions? [more inside]
posted by masymas on May 30, 2006 - 12 answers

Sounding the horn for people who know something about math

Suppose there's a web form with 50 checkboxes (representing options or interests), and that checking one has no effect on any of the others. A user could select any two boxes, or a half dozen, or a different half dozen, or all 50. The only constraint on the form submission is that the user must check at least two boxes. How many possible combinations are there? [more inside]
posted by Tuwa on May 13, 2006 - 17 answers

Combinations and Permutations

Combinations and permutations are something that's starting cropping up a lot in my work and I need to rapidly elevate myself from utterly rubbish to vaguely proficient (example included). [more inside]
posted by forallmankind on Apr 28, 2005 - 10 answers

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