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The LCM can't be less than the GCF. 12 and 18 have a GCF of 6 and an LCM of 36.

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Q: Im thinking of 2 numbers 12 and another number have a greatest common factor 6 and their least common multiple is 3 what is the number?
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I am thinking of two numbers, 12 and another number. The greatest or highest common factor for 12 and the number I am thinking of is six, the least common multiple of them is 36. What is the other number I am thinking of?

Answer=18


When a number is a multiple of another the GCF of the numbers is the greatest common factor?

The GCF of the numbers is the greatest common factor no matter what their relationship is. When one number is a multiple of another number, the GCF is the smaller number.


Is it true that when one number is multiple of another the greatest common factor of the numbers is greater of the numbers?

No, the lesser.


When one number is a multiple of another the gcf of the numbers is always sometimes or never the greatest of the numbers?

The answer is sometimes - when the multiple in question is 1.


Can two even numbers have a greatest common multiple of 1?

The greatest common multiple of any set of numbers is infinite. The greatest common multiple of any set of numbers will never be one.


Can you find the greatest common multiple of two numbers?

The greatest common multiple of any two numbers is infinite.


When is the product of two numbers divided by the greatest common multiple the least common multiple?

Never. The greatest common multiple of any two numbers is infinite.


What strategies can be used to find the greatest common multiple of two numbers?

The greatest common multiple of any two numbers is infinite.


Greatest common multiple of 3 and 4?

There is no 'greatest common multiple' of any two numbers. You can keep multiplying towards infinity and you will never reach a maximum. You may either be thinking of... ...the least common multiple of 3 and 4, which is 12. ...the greatest common denominator of 3 and 4, which is 1.


Could you find the greatest common multiples of two numbers?

Yes! Another opinion: No, you could not, because there is no such thing. Whatever number you bring me, and tell me that it is the greatest common multiple of two numbers, then no matter how big your number is, all I have to do is multiply your number by the product of those two numbers, and I have a new, bigger, common multiple.


What is the greatest common multiple of 36 and 18?

The GREATEST common multiple is a number approaching infinity. The LEAST common multiple is 540.


What is the greatest common multiple of 16 and 56?

The greatest common multiple of any set of numbers is infinite.