Probability using Combinations
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sounded like you were gonna choose which 3 of the 8 live or die, hahahaha
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What my prof couldn't teach me over a 3 hours long lecture, you did it in 9 minutes!
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Can you calculate the total outcome with the combination formula??
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Sal really IS the god of probability
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There is sth wrong to the demonstration. If we the same formula to find out for example the probability of getting 4 heads in 8 flips, than we have 27%, and is clearly that the probability should be 50%
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@Asmor Thank you !
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@aew782 Subtract the same number from the exponents on both the top and bottom. Just to keep things clean, let's say it's just 2^3/2^8 = 2^(3-3)/2^(8-3) = 2^0/2^5 = 1 / 2^5.
Another way to understand is to expand them out. 2^3/2^8 = (2x2x2)/(2x2x2x2x2x2x2x2). Then you just cancel top and bottom and you're left with 1/2x2x2x2x2 = 1/2^5
Hope that helps!
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"I am the god of probability" hahaha...
shazaduh 2 years ago 22
thanks
Stalingrad17 2 years ago 12