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I’m thinking of two numbers, 12 and another number. 12 and my other number have a greatest common factor of 6 and their least common multiple is 36. What’s the other number I’m thinking of ?

Respuesta :

The product of two numbers and the product of their greatest common factor and least common multiple are always equal.


Let the other number = X.

Greatest common factor is 6

Least common multiple is 36


We now have 6 * 36 = 12 * x

Simplify:

216 = 12x

Divide both sides by 12:

x = 216 / 12

x = 18


The other number is 18.


Number 18 is the number you should be thinking of