pls be correct and dont use the other answer

Question 2: A password is a string of 8 characters taken from the alphabet (that is, the set of 26 characters {a,b,c,,x,y,z} ), the set of 10 digits {0,1,3,4,5,6,7,8,9} and the set of 5 special characters {!,@,#,,+}. a) How many unique passwords are there? b) How many unique passwords are there where no character can be repeated and there are exactly 2 digits? c) How many unique passwords are there where you can repeat characters and there are at least 2 digits? d) How many unique passwords are there where you can repeat characters and have at least 2 digits and at least 1 special character