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anonymous
 one year ago
so three cards are drawn from a deck of 52 cards. what are the ODDS that all three cards are spades?
how do you do odds? opposed to probability?
anonymous
 one year ago
so three cards are drawn from a deck of 52 cards. what are the ODDS that all three cards are spades? how do you do odds? opposed to probability?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know that it's the ratio successes :failures so i tried 13 C3 : 39C3 but it didnt get me the right answer

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1the probability that all 3 cards are spades is the product of the individual probabilities

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1there are 13 spades in a pack of 52 so P(3 spades) = 1/4 * 12/51 * 11/50

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1this equals 11/850 as a fraction

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1not sure about the odds I guess its 839 to 11 against it happening (839 because its 850  11)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but im a bit confused on how to get it

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1what part are you confused about?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0finding the odds of something

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1I dont back horses so I'm not much help there lol

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1when you said right 11:839  was that the answer given in the book or online?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0answer key from my teacher

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1right well if my memory serves me right there are 2 kins of odds odds on and odds against so ithink 11:839 is the odds ON 3 spades being drawn ad 839:11 is the odds AGAINST 3 spades being drawn

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1a simple example would be if a horse has the probability of winning a race the odds ON will be 1:3 and odds against will be 3:1  the 2 numbers must add up to 4

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1* has the probability 1/4 of winning a race

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but for cards, you have to draw 3 cards? so wont that change

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1no the rule is still the same you first work out the probabiility as a fraction and work out the odds on by subtraction ( in our case 85011) your teacher wanted the odds ON drawing 3 spades.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i tried that for another problem. which is now 5 cards are draw... odds of get 5 face cards.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so if i treat it like probability it would be 792/2598960

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1some fraction i have a graphical calculator so i can get that in its most simple form  its 33/ 108290  so can you work out the odds from this result?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how did you get that?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1as i said my calculator does the addition of fractions

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i mean like the probability in general?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1you could do it manually by finding prime factors but its a bit tedious

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how do you know what fractions to add though

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1well how did you get your fraction 792/2598960?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the number of successes is 12C5 over total number of outcomes is 52C5

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1oh ok thats another way of doing it the other way is 12/52 * 11/51 * 10/50 *9/49 * 8/48

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1 beceuse theres 12 face cards out of 52  then we have 11 left out of 51 etc they are independent evants so the probabilities are multipl;ied

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hm, i get a different answer

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1you can simplify some of the fractions first so its same as 3/13 * 11/51 * 1/5 * 9/49 * 1/6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh i got the answer. thank you xD
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