Question

John is choosing a password for his access to the internet. He decided not to use the digit 0 or the letter M. Each letter or number may be used more than once. How many passwords of 2 letters followed by 4 digits are possible?

4,100,625

3,100,625

3,100,500

4,200,625


PLEASE HELP!!! AM STUCK!!!

Answer 1

26 letters were available for use but once the M is removed, 25 letters are available for choosing.

The letters may be chosen in 25*25 ways given that repetitions are allowed.

There are 10 digits available but once the 0 is removed, 9 digits are available for the 4 remaining slots of the password.

The digits may be chosen in 9*9*9*9 ways.

According to the Fundamental Counting Principle, the password may be chosen in:

25*25*9*9*9*9 ways.

Crank that out and match the product to one of your options.

@ilikestudying140898

Answer 2

Thank you ^^

Answer 3

You are welcome.