A Microsoft Interview Question (aka basic Bayes' Theorem)

DQPaulie · #1 01-15-2005, 01:56 AM

First look, it is 4/6 to live on first shot and 3/5 to live on second shot. 66% is higher than 60% so spin? But looking at where the first shot could have landed, the next shot will kill 25% and let me live 75% if i just pull the trigger. So I guess no spin ......click.

VBM · #2 01-15-2005, 02:10 AM

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But looking at where the first shot could have landed, the next shot will kill 25% and let me live 75% if i just pull the trigger. So I guess no spin ......click.

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huh? i got the 1st part on 4/6 vs 3/5 (not 3/6 like i thought)...a little help w/ this part?

VBM · #3 01-15-2005, 02:56 AM

ok, feeling dumb...i get it now...and i think you guys dont' wanna get into a russian roulette game w/ me now!!! lol...

mr pink · #4 01-15-2005, 02:21 AM

i'll give it a shot...after your friend blanks on his first shot, you've got at best 3 more blanks and at worst 0. there's really only 1 chamber that you have to be worried about, the one adjacent to the 2 remaining bullets...4 chambers - so 1/4 times, you'll be dead, and 3/4 times you'll survive. i'd rather take a 25% shot after my friend than another spin looking at 33% (2/6).

peace - jeff