Q: What is all the fact families of the number 80?

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80=1 In fact, any number to the power 0 is 1.

80 trillion is the answer, because if you look at it for a long time you will see all the zeros.

No number has the multiples of 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, but the number 80 (and all its multiples: 160, 240, 320, 400, ...) has them all as FACTORS.

80 is a whole number.

60 is 80% of what number:= 60 / 80= 60 / 0.8= 75

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80=1 In fact, any number to the power 0 is 1.

80 trillion is the answer, because if you look at it for a long time you will see all the zeros.

269

No number has the multiples of 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, but the number 80 (and all its multiples: 160, 240, 320, 400, ...) has them all as FACTORS.

No. My copy of the Federalist lists Alexander Hamilton as the author of Number 80. I believe this to be an historical fact. Of course, given the egregious way that web page misapplies Number 80, it is not surprising they got the author wrong too.

Other than 2, no even number is prime, as they can all be divided by 2. Further, no number that ends in 0 can be prime as it can be divided by 10.

80 is a whole number.

60 is 80% of what number:= 60 / 80= 60 / 0.8= 75

No. All even numbers are composite except the number 2.

All of them. You can't have a common factor of a single number.

Multiply the number by .8 to get 80% of that number.

78. add up all the numbers and then divide by the number of numbers you added.