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Orrex

(66,502 posts)
Thu Dec 4, 2025, 10:27 AM 18 hrs ago

Statistics/Math Question [View all]

In my tool bag I have nine black Sharpies and one silver Sharpie.

If I need a black one and I reach into my bag blindly to grab one, what are the odds that I’ll get the silver one every single damn time?

Of course, if I want the silver one, I’ll blindly draw all nine black ones first.

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Statistics/Math Question [View all] Orrex 18 hrs ago OP
Ah Yes..I've had this action quite more than a few times. chouchou 18 hrs ago #1
The only thing I remember from the one statistics course... 3catwoman3 17 hrs ago #2
It depends. The Madcap 17 hrs ago #3
Good question Orrex 16 hrs ago #4
Yeah, what you need to do is "sample without replacement" GopherGal 14 hrs ago #6
I would... 2naSalit 16 hrs ago #5
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