Apadlock has a four-digit code that includes digits from 0 to 9, inclusive. what is the probability that the code does not consist of all odd digits if the same digit is not used more than once in the code?
120 out of 5,040
120 out of 3,024
2,904 out of 3,024
4,920 out of 5,040

Use the theoretical definition of probability:

1. Find the probability that the code consists of all odd digits if the same digit is not used more than once in the code.

The number of all possible outcomes is

The number of codes in which all digits are odd is

Then,

2. Find the probability that the code does not consist of all odd digits if the same digit is not used more than once in the code:

correct choice is D

4,920 out of 5,040

Step-by-step explanation:

Total number of digits= 10

By using permutation, the total number of ways to make a four digit code without repetition is given by :_

Total odd digits = 5

The number of ways to make a four digit code having all odd digits without repetition is given by :_

Now, the number of ways to make code does not consist of all odd digits without repetition = 5,040-120=4,924

Now, the probability that the code does not consist of all odd digits if the same digit is not used more than once in the code is given by :-

y=1/4x-4

step-by-step explanation: