The bar chart below shows the number of refugees entering the US from Jan. 21 to June 30, 2017 by nationality. The top 10 nationalities are shown in the chart. a. Summarize what you see in this chart in at least 3 sentences. b. Suppose during this time 19,030 refugees were admitted to the United States. What percentage of refugees come from each of these countries?
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.
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