Question

A bank lets its constomers

choose,
personalidentification numbey
(PIN)comprising of 2 character that can
beAlpha numeric
What is the probability of someone
correctlly guessing a bank Customer's PN
in the first
attempt if no repeats are allowed

Answer 1

1/1260

Step-by-step explanation:

Since ther PIN consists of 2 characters with one being an alphabet while the other is a letter;

There are 26 alphabets and 10 possible digits. Thus;

Total characters = 36 characters.

Probability of someone correctlly guessing a bank Customer's PIN in the first attempt if no repeats are allowed is; 1/(36C1 * 35C1) = 1/1260