Somebody was asking how to approximate 1% with only six-sided dice.
Seems pretty trivial to me. Write out 1% (0.01) in base 6. Roll a dice repeatedly, putting each result after the decimal point, treating 6's as 0's (i.e. first roll is 1/6ths, second is 1/36ths and so on). Repeat until your number is definitively above or below the binary expansion. If below, success (1% of the time) - otherwise if above, fail.
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Okay maybe trivial isn't quite the right word. You technically also don't need to do the whole base 6 number thing, it's just an easier way to visualise what's going on. Another way to do it is:
Step 1: Roll twice. Double 1's = keep going. Anything else = fail.
Step 2: Roll. 1-2 = success. 3 = keep going. 4+ = fail.
Step 3: Roll. 1 = keep going. 2+ = fail.
Step 4: Roll. 1-5 = success. 6 = keep going.
Step 5: Roll. 1-4 = success. 5 = keep going. 6 = fail.
Step 6: Roll. 1-3 = success. 4 = go to step 2. 6 = fail.
This is equivalent to the above (with the rolls required adjusted for ease of checking), but gives exactly a 1% chance of success. It does have the potential to never finish, but you can just say stop after Step 6 and call it fail if you like and you're still at 1.000% to 4 sf or something like that.