# help

help

determine the probability of selecting each card
zebragirl
21 March 2013
the ace of spades, a 5, a 5 or a 9
zebragirl
21 March 2013
Ok so what we are working with here is discrete probability
Benjamin C.
22 March 2013
like flipping a coin, or rolling a dice, it is picking a card
Benjamin C.
22 March 2013
this means something will either happen or not happen, it can't be anywhere in between
Benjamin C.
22 March 2013
so to work out probabilities you take the number of outcomes, and divide it by the number of possibilities
Benjamin C.
22 March 2013
3/6 =0,5
Benjamin C.
22 March 2013
so if we want to know the probability of rolling an even number on a dice, it would be 0.5, because you could get 2,4 or 6, (3) and there are 1,2,3,4,5,6 (6) posibilities
Benjamin C.
22 March 2013
think how many cards are there, how many aces, how many 9s etc
Benjamin C.
22 March 2013
does this give you a hint for solving your problem?
Benjamin C.
22 March 2013
If you have a pack of cards with 13 cards in each of 4 suits then there are 52 in total. Leave the jokers out of the pack or there would be more than 52. Then, as Benjamin says, think for example how many cards out of 52 would be numbered 5.
chris_davies
22 March 2013