If you select a card at random, what is the probability of getting: (Round to 4 decimal places where possible) a) A 10 of Hearts? b) A Heart or Club? c) A number smaller than 4 (counting the ace as a 1)?
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color is split into two suits of 13 cards each (clubs and spades are black and hearts and diamonds are red). Each suite is split into 13 individual cards (Ace, 2-10, Jack, Queen, and King).
If you select a card at random, what is the
a) A 10 of Hearts?
b) A Heart or Club?
c) A number smaller than 4 (counting the ace as a 1)?
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