What are characters they want 4 of them to make a password?

Answer 1

Password characters can include

-- the digits, 0 through 9 . . . . . ten choices

-- the letters, A through Z . . . . . 26 choices

-- some systems can tell the difference between capital letters and small letters,

so you have another 26 choices . . . the small letters 'a' through 'z'

-- some systems also let you use special characters, like !, @, #, $, %, &, *, ?, /

If your system allows all of these, and you need 4 characters for a password,

then you can make almost 4 billion different passwords !

Here are a few examples of passwords you can make with 4 characters:

1234

ABCD

abcd

AbcD

A3g9

2c4?

Home

homE

1776

bush

fONe

five

5ive