Question

A safe has a 4-digit lock code that does not include zero as a digit and no digit is repeated. What is the probability of a lock without all even digits?

There are/is ___ way(s) to get a lock code with all even digits.

There are 3,024 different 4-digit lock codes.

There are are/is ___ way(s) to get a lock code without all even digits.

The probability of a 4-digit lock code without all even digits is ___/ 3024.

Answer 1

To find the total number of outcomes for this event, find the permutation of ⇒ 9.
The total number of outcomes is 3024
The total number of favorable outcomes is a permutation of ⇒ 4
The probability that the lock code consists of all even digits is ⇒ 24 out of 3,024.