8- 16 What is the combination of numbers and letters?

1, which means that the password cannot only contain numbers, uppercase letters, symbols or lowercase letters. A password containing two or more answers, consisting of 8- 16 characters.

2. As long as the current password contains both numbers and letters, and the password is more than 8 digits and less than 16 digits. For example: a 432178abc12561100. The password consists of 8~ 16 digits, numbers and letters, and contains at least two characters, that is, the length of the password must be at least 8 digits, and the longest is not more than 16 digits; You need to use both numbers and letters.

This is the English knowledge that primary school students must master. They are the first 1, the second two twos, the third three, the fourth four, the fifth five, the sixty-sixth six, the seventy-seventh seven and the eighth eight. There are already eight numbers with upper and lower case letters.

4. Hello! The password you set needs at least eight digits and at most sixteen digits, in which you need to add characters instead of all digits.

5. Any combination of letters, numbers and symbols from 8 to 16. For example/kloc-0 123456789；; '、。

6, that is, not light numbers, or light letters, or light symbols, or light letters. At least two of them are included, and then an 8- 16 character password is formed. For example, 12345678 is an optical number, and such a password does not contain at least two of them. 12345678qwer has English and numbers, belonging to at least two of them.