Dancers on a stage floor follow a choreography as shown in the circle below. Letters from A to E represent the dance sequence of the choreography proposed by the dance teacher and in order to make it as precise as possible, the teacher measures the angles formed by the distances between the points. What is the measure of
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.
Dancers on a stage floor follow a choreography as shown in the
What is the measure of <BED?
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