Which positive integers less than 12 are relatively prime to 12?

2 numbers are relatively prime, if they have no common factor except 1.

The positive integers less than 12 are {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}

12 and  {2, 4, 6, 8, 10} have 2 as a common factor

12 and {3, 9} have 3 as a common factor.

{1, 5, 7, 7} are left. These numbers have no common factor with 12 except 1.

{1, 5, 7, 11}

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.