Question

Let X = the number of nonzero digits in a randomly selected 4-digit PIN that has no restriction on the digits. What are the possible values of X? 0, 1, 2, 3, 4 1, 2, 3, 4 0, 1, 2, 3 0, 1, 2, 3, 4, ... 1, 2, 3, 4, ... For the following possible outcomes, give their associated X values.

Answer 1

Answer:

In the set {0,1,2,3,4}

The possibile 4 digits are; (1,2,3,4), non zero digit X = 4.

(0,2,3,4), non zero digit X = 3.

(1,0,0,4), non zero digit X = 2.

(0,0,0,4), non zero digit X = 1.

(0,0,0,0), non zero digit X = 4.

Step-by-step explanation:

X is the number of non-zero digits in each of the possible outcomes

Answer 2

The possible values of x is 1, 2, 3, 4

The calculation is:

In the set {0,1,2,3,4}

The possibile 4 digits are; (1,2,3,4), non zero digit X = 4.

So,

(0,2,3,4), non zero digit X = 3.

(1,0,0,4), non zero digit X = 2.

(0,0,0,4), non zero digit X = 1.

(0,0,0,0), non zero digit X = 4.

Here X is the number of non-zero digits for possible outcomes

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