How many digits can a three digit password consist of?

How many digits can a three digit password consist of?

If all three numbers are not repeated
Take 1 number as password = 3
Take 2 numbers as password = 3 * 3 = 9
Take 3 numbers as password = 3 * 3 * 3 = 27
When there is a repetition of one number, one number = 2; two numbers = 2 * 2 = 4; three numbers = 2 * 2 * 2 = 8
If all three numbers are the same, take 1 number = 1; take 2 numbers = 1 * 1 = 1; take 3 numbers = 1 * 1 * 1 = 1

The six sides of the dice of a cube are marked with 1, 2, 3, 4, 5 and 6 respectively. Now throw the dice at will, and you can roll it
The number of times that odd numbers are thrown upward is about (), the number of times that prime numbers are thrown upward is about (), the number of times that numbers that are neither odd nor combined are thrown upward is about ()

The number of times to throw odd numbers up is about (1 / 2), the number of times to throw prime numbers up is about (2 / 3), and the number of times to throw neither odd nor combined numbers up is about (1 / 6)

There are two dice a and B. the six sides of the dice are respectively marked with the number 123456. If you roll two dice at will, the possible situations are as follows
Fill in the exercise book

（1,1）（1,2）（1,3）（1,4）（1,5）（1,6）（2,1）（2,2）（2,3）（2,4）（2,5）（2,6）（3,1）（3,2）（3,3）（3,4）（3,5）（3,6）（4,1）（4,2）（4,3）（4,4）（4,5）（4,6）（5,1）（5,2）（5,3）（5,4）（5,...