How do you do probability

Each number on the die will be paired with each side of the coin.

Your sample space would be:

1H, 1T

2H, 2T

3H, 3T

4H, 4T

5H, 5T

6H, 6T

When you draw it out you would have the number 1 with two "branches" coming off of it. One branch would have an H at the end and the other branch a T.

Do the same for each number to form the tree.