1.How many possible ways can a housewife take to buy a book from a bookstore, then buy groceries from a supermarket if 3 bookstores and 3 supermarkets are all located at almost the same distance from her residence?"

2.Find the number of ways to fill up the positions of mayor and the vice mayor if there are 4 candidates for mayor and 3 candidates for Vice Mayor.

3.How many 3-digit numbers can be formed using the numerals 3, 5, 6, and 8 if no repetition of the numeral is allowed?

4.If it will be allowed to use a number repeatedly, how many 4-digit numbers can we form from the numbers 4, 5, 6, 7, 8, and 9.

5.If 4 coins are tossed, in how many ways can they fall?

6.How many ways can 8 persons be seated on a chair if there are only 4 chairs available?

7.How many 5-digit numbers can be formed using the numbers 0, 1, 2, ....9, such that:

a.Repetition is allowed?

b.Repetition is not allowed?

c.The first digit must not be 9 and repetition is not allowed?