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.

Question

Mathematics

Chelsea

1 December, 16:45

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.

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Answers (1)

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Rafael Ferrell · Answer 1

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