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The digits 4​, 5​, 6​, 7​, and 8 are randomly arranged to form a​ five-digit number, Find the probability that the first and last digits of the number both are odd.

1 Answer

5 votes

Answer:

5,4,6,7

Explanation:

The digits 4​, 5​, 6​, 7​, and 8 are randomly arranged to form a​ five-digit number. Complete parts​ (a) and​ (b) below.

​(a) Find the probability that the number is odd.

The probability that the number is odd

​(Type an integer or a simplified​ fraction.)

​(b) Find the probability that the first and last digits of the number both are odd.

The probability that the first and last digits of the number both are odd is

.

​(Type an integer or a simplified​ fraction.)

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