1, 5 apples are distributed to Dongdong, Xixi, Wenwen, and some people may not get them. * * * There are _ _ _ _ different ways of division.
2. Four eggs were given to Dongdong, Xixi and Wenwen. Some people may not understand. * * * There are _ _ _ _ different ways of division.
3. Six identical notebooks are distributed to Dongdong, Xixi and Wenwen. Some people may not understand. * * * There are _ _ _ _ different ways of division.
4. Seven gold coins for three pirates, and each pirate should give at least 1 gold coins. * * * There are _ _ _ _ _ _ different ways of division.
5. Give six gold coins to three pirates, and each pirate will get at least 1 gold coin. * * * There are _ _ _ _ different ways of division.
6. Give five gold coins to three pirates, and each pirate will get at least 1 gold coin. * * * There are _ _ _ _ different ways of division.
7. The sum of three integers is equal to 5, and there are _ _ _ _ _ _ _ groups of three numbers in * *.
8. The sum of three integers is equal to 6, and * * * has _ _ _ _ _ _ groups of three numbers.
9. The sum of three integers is equal to 7, and there are _ _ _ _ _ _ _ groups of three numbers in * *.
10, 7 apples are divided into 3 piles, and * * * has _ _ _ _ _ _ different dividing methods.
1 1, eight gold coins are divided into three piles, and * * * has _ _ _ _ different ways of dividing.
12, nine gold coins are divided into three piles, and * * * has _ _ _ _ _ _ different ways of dividing.
13, the sum of ten digits and single digits is 1 1, with _ _ _ _ _ _.
14 and 10 cakes are divided into two piles. How many different ways to find a * * *?
15,300 is divided into the sum of three integers, each integer is not less than 99 and not more than 10 1. How many ways are there to find a * * *?
16, A * * * has six identical gifts, divided into four. How many ways can a * * * be divided?
17. Today is 14. In February 2003, it was the time for the 13th Zu Chongzhi Cup Primary School Mathematics Invitational Tournament. It can be written as 2003 12 14, and the sum of its digits is 13. Please list them one by one according to this symbol.
18. One day, the manager had four letters to be typed by the typist. Every time he puts the letter he wants to type at the top of the typist's letter pile, the typist will pick up the letter at the top of the letter pile when he is free. Suppose these four letters are numbered 1, 2, 3, 4 in the chronological order that the manager put them on the pile, and the typist * all possible letter typing orders. Species. (For example,1234,4321is the possible order of typing letters, and 4 123 is impossible. )