A, B, C, and D are going to ride in A’s car to go to the mall. But only A and C know how to do drive and D does not want to sit in front. How many ways can the four sit on the car if the car has two front seats and two back seats?
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.
A, B, C, and D are going to ride in A’s car to go to the mall. But only A and C know how to do drive and
D does not want to sit in front. How many ways can the four sit on the car if the car has two front seats
and two back seats?
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