Question

You have to choose a password consisting of 3 whole numbers consisting of 3 whole numbers between 0 and 9.You are allowed to repeat the digits but the order of the digits matter you also cannot choose a password in which all 3 digits are same such as 111 or one that begins with zero such as 012.how many options you have.Options are 1.Over 10000 2.between 1000 and 9999 3.Between 500 and 999 4.fewer than 499

Answer 1

Answer:

3 option is the correct solution because biggest 3 digit number is 999