Solution: 4 A city has a population of 289,000 people. Ten years ago, the population was 259,500 people. How many more people does the city have now? Solution: G4Y 60G 5 Use the tiles below to create a number that makes each subtraction problem true. You may use a tile more than once. 12 3 4 5 6 5,9 0 0 8 7,0 0 5 | | 6 4, 5 7 5 6 1, 8 6 2 Peter listed his car for sale at $21,550. After a week, he dropped the sale price by $1,650. When the car sold, the sale price was another $1,955 less. What vas the final sale price of the car?
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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