**Step-by-step explanation:**

On the left: possible outcome has the value of 1 (1) =

On the right: 1 possible outcome has the value of 1 (1)=

=> the probability of possible P(sum)= 2

= *

=

On the left: possible outcome has the value of 1 =

On the right: 1 possible outcome has the value of 2 =

On the left: possible outcome has the value of 2 =

On the right: 1 possible outcome has the value of 1 =

=> the probability of possible P(sum)= 3

= * + *

=

On the left: possible outcome has the value of 1 =

On the right: 1 possible outcome has the value of 3 =

On the left: possible outcome has the value of 2 =

On the right: 1 possible outcome has the value of 2=

=> the probability of possible P(sum)= 4

= * + *

=

On the left: possible outcome has the value of 2 =

On the right: 1 possible outcome has the value of 3 =

=> the probability of possible P(sum)= 5

= *

=