# Question: my two numbers are 70 and 84 hcf highest common...

###### Question details

My two numbers are 70 and 84.

HCF (highest common factor)of 70 and 84 = 2x7(=14)

LCM (lowest common multiple) of 70 and 84 = 2x2x3x5x7(=420)

Now comes the part I don't know how to do. How do I find **other** pairs of numbers (with a method, not trial and error) with the same HCF & LCM of 70 and 84?