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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]

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]

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]

How do I find every possible outcome of an arbitrary length set of coin flips? [more inside]

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]

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]

What are some terrible flavor combinations? [more inside]

Help me tear-apart, clean and reset my combination lock. [more inside]

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]

What file are settings (created macros, custom toolbar buttons, etc.) stored in in Word 2000? [more inside]

What movies and treats go together? [more inside]

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]

I have a math question involving combinations and sets. [more inside]

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]

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]

How can one cheat and predict the outcome of eenie meenie miny moe? [more inside]

Quick & healthy food pairing suggestions? [more inside]

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]

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]

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