Can I pose a different question: Can you tell me why the answer is NOT 1/6 ?? So, instead of trying to tell me WHY it is 1/11 can you tell me why the answer is NOT one out of six? Would that make this process easier?

Synergistic others have already posted answers using columns of possible dice combinations. They can be seen on this forum and on the Wizard's. So before you go to the trouble, please be sure you saw those. Thanks.