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The prime factors of 81 are 3, 3, 3, and 3 - so the only two-digit factor is 27, which is 3 x 3 x 3.

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Q: How many two digit numbers are multiples of 3 and also factors of 81?
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Related questions

How are factors and multiples of a number are related?

Factors of the number will also be factors of the number's multiples. Multiples of the number will also be multiples of the number's factors.


What do the factors and multiples of the numbers tell you about the situation in a word problem?

Maybe that the factors of the number are also factors of the number's multiples?


Why do numbers ending in 0 have factors of 2 and 5?

Numbers ending in zero are all multiples of 10, and therefore also are multiples of 2 and 5.


Why do the factors of 16 are also factors of 32 and 64?

All numbers have factors. Some numbers have some of the same factors as other numbers. Multiples of numbers have all of the factors of numbers that are factors of them, plus some of their own. 32 is a multiple of 16 and will have all of its factors. 64 is a multiple of both 32 and 16 and will have all of their factors.


What factors are divisible by 28?

28, 56, 84, and all other multiples of 28 that are factors of other numbers are also divisible by 28.


Are the factors of 16 also the factors of other multiples of 16?

Yes, the factors of 16 are also the factors of the multiples of 16.


Which multiples of 4 are also factors of 36?

4, 12 and 36 are the multiples of 4 that are also factors of 36


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Yes.


Are the factors of 16 also factors of other multiples of of 16?

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What are all of the multiples of all of the 1 digit numbers?

A multiple of a number is that number multiplied by an integer. It is obviously not possible to get "all multiples" of any number. ================================================= There are an infinite number of multiples of any single number. Also, there are an infinite number of quantities written with a single digit. Besides the 19 whole numbers from -9 to +9, there are also all the numbers like .4 and -.0007 . So the answer to your question would consist of an infinite number of lists, with an infinite number of items on each list. We're both slightly busy at the moment. Maybe we'll get back to you.


Is all multiples of 4 are also factors of 2?

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How many multiple of 10 are there in 3 digit numbers?

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