What is the greatest common factor of 63, 54, and 9?

The answer is 9.

The factors of 63 are 63, 21, 9, 7, 3, and 1

The factors of 54 are 54, 18, 9, 6, 3, 2, and 1

The factors of 9 are 9, 3, and 1.

From the factors from these 3 numbers, we can see that the greatest factor that all of them have is the factor 9. Thus, the greatest common factor, the GCF, of these 3 numbers is 9.

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Step-by-step explanation:

Greatest Common factor of 63, 54 and 9 is 9

The gcf of 54 and 63 can be obtained like this:

Find the factors of each number

The factors of 54 are 54, 27, 18, 9, 6, 3, 2, 1.

The factors of 63 are 63, 21, 9, 7, 3, 1.

The common factors of 9 is 9 and 3

The common factors of 9, 54 and 63 are 9, 3, 1, intersecting the two sets above.

In the intersection factors of 9, 54 ∩ factors of 63 the greatest element is 9.

Therefore, the greatest common factor of 9, 54 and 63 is 9.

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: