Make a tree diagram:

A=1,2,3,4,5,6

B=1,2,3,4,5,6

B=1,2,3,4,5,6

C=1,2,3,4,5,6

C=1,2,3,4,5,6

C=1,2,3,4,5,

So the probability of getting an (A and a 1) is 1/36 (lowest answer) because there is only one A card and it has one 1 in it so 1*1= 1 therefore the answer is 1/36.