Space 2335 Share Posted May 7, 2015 You flip two coins. At least one of these coins lands head. What is the probability that both coins land heads? Link to post Share on other sites More sharing options...
Pureimp10 5691 Share Posted May 7, 2015 Oh wait, at least one is heads all the time? 50% Link to post Share on other sites More sharing options...
Pureimp10 5691 Share Posted May 7, 2015 -snip- Link to post Share on other sites More sharing options...
Space 2335 Author Share Posted May 7, 2015 Wrong, cause if one is heads all the time, you can either get tails and heads, heads and tails, or heads and heads. Hence, 1/3 probability But probability does not carry over. On both flips, the probability of getting heads is 50%, no matter what. Link to post Share on other sites More sharing options...
Pureimp10 5691 Share Posted May 7, 2015 But probability does not carry over. On both flips, the probability of getting heads is 50%, no matter what. True, I'm thinking genetics. Link to post Share on other sites More sharing options...
mylimo7 409 Share Posted May 7, 2015 It's 50% chance. One is a definite head and the other is not soo 1.00 x 0.50. Link to post Share on other sites More sharing options...
zaezae 1098 Share Posted May 7, 2015 The question is asking "What is the probability that you will get heads and heads?" The detail about you already getting heads is one of those 'distraction' details from the real question. Thus the answer is 1/3. But if you asked "You already flipped a coin and got heads, and will flip another, what is the probability that it will be heads also" The answer would be 1/2 Link to post Share on other sites More sharing options...
Space 2335 Author Share Posted May 7, 2015 The question is asking "What is the probability that you will get heads and heads?" The detail about you already getting heads is one of those 'distraction' details from the real question. If the question was "What is the probability of getting heads twice?" the answer would be 1/4. 1/2x1/2. It's not that question though, I don't think. Link to post Share on other sites More sharing options...
zaezae 1098 Share Posted May 7, 2015 Eh, true. I dunno. I forgot what the real answer was then. Link to post Share on other sites More sharing options...
Harri 4815 Share Posted May 7, 2015 I'm not doing your homework for you Space, stfu. Link to post Share on other sites More sharing options...
Aislin 4354 Share Posted May 7, 2015 There's a 100% chance you're a ******* moron :) Link to post Share on other sites More sharing options...
Lark 2227 Share Posted May 7, 2015 You should use probability changing missiles. 1 Link to post Share on other sites More sharing options...
Ragadorus 113 Share Posted May 7, 2015 You should use probability changing missiles. Try adding more spiral. Link to post Share on other sites More sharing options...
oblivionsbane 714 Share Posted May 7, 2015 42 Link to post Share on other sites More sharing options...
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