A bank requires that its customers create a PIN to access their account. The PIN must be 2 letters followed by 2 numbers. How many unique PINs are there? A 520 C 67,600 B 10,000 D 456,976

1 Answer
May 16, 2018

Answer is C. 67600

Explanation:

There are #26# ways in which each letter can be selected i.e. #26×26=676# ways that first two letters can be selected.

Similarly we can have each number in #10# ways and #10×10=100# ways that we can have two numbers.

In all we can have #676×100=67600# ways in which PIN number can be selecrted.

Hence answer is C. 67600.