One quarter of the pack are CLUB cards. Three quarters of the pack are NOT CLUB cards.
So the chance (probability) of picking a CLUB card is 1 out of 4 = 0.25
The chance (probability) of picking a NOT CLUB card is 3 out of 4 = 0.75
Adding the various probabilities the answer must always be 1.0, which is true here.
If the probability of something happening is 1.0, that means the probability is "certainty". It is bound to happen.
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the probability of picking a king from a deck of cards is 4/52,which is 1/13 because there are 4 kings. Which are king of heart, king of diamond,king of club and king of spade. And the probability of picking a diamond is 13/52,which is 1/4.
Since there are four 5's in a deck of 52 cards, the probability of picking a 5 from a deck of 52 cards is 4 in 52, or 1 in 13, or about 0.07692.
The probability of picking a diamond out of a standard deck of 52 cards is 13 in 52, or 1 in 4, or 0.25.
There are 4 Kings in a deck of 52 cards, so the probability of picking a King is 4/52 or 1/13.
Probability of an event A is P(A) is the (chance of A)divided by (the total chances) and odd is (Chances for: Chances against) For example the probability of picking a 6 in a deck of cards is 4/52 and the odds are 4:52-4=4:48 or 1:12