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There can be no greatest common denominator. If you have a set a numbers whose least common denominator is L then 2*L, 3*L, … are all common denominators. There is no end to that sequence and so no greatest.

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Since 54 is a multiple of 18, it will also be the least common denominator of the two.

Q: What is the most common denominator of 18 and 81?

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The greatest common factor of 36, 81 and 18 is 9

The GCF is 9.63/81 = 7/9

Assuming that least common refers to the least common multiple, LCM(27, 81) = 81

No, 18 is not a factor of 81.

You need at least two numbers to find something in common between them.

Related questions

LCD(9, 16, 18, 81) = 1296

common denominator of eight and nine

3

Their product.

8100

Since 8 is 23 and 81 is 34, the least common denominator is 23 x 34 = 648.

the number 9

4536

It is: 324

The lcm or lcd is 5751

The LCM of 18 and 81 is 162

The common factors of 27, 18, and 81 are 1, 3, and 9.