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You roll two fair 6-sided dice.

One of them is a 6.

What are the odds that the other is also a six?

[Poll #1770498]

(no subject)

Date: 2011-08-18 01:04 am (UTC)
From: [identity profile] theweaselking.livejournal.com
There's only 36 possibilities. Brute-force IS a valid formal derivation.

(no subject)

Date: 2011-08-18 01:14 am (UTC)
From: [identity profile] skington.livejournal.com
I worked out 25/36 odds in a similar way - assuming that half the battle had already been won, so therefore eliminate as impossible those solutions where neither number was a 6, work out how many we had left.

And yeah, the human brain does not do statistics.

(no subject)

Date: 2011-08-18 01:14 am (UTC)
From: [identity profile] skington.livejournal.com
Also, it's "maths". The French agree.

(no subject)

Date: 2011-08-18 01:38 am (UTC)
From: [identity profile] theweaselking.livejournal.com
I should have put 25/36 as one of the options!

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