Question 866212
There are three possible outcomes that sum to 10. (4,6) (5,5) (6,4)
There are six possible outcomes that are doubles. (1,1) (2,2) (3,3) (4,4) (5,5) (6,6).
There is one possible outcome that both sums to 10 and is a double. (5,5)
{{{P(A_or_B)=P(A)+P(B)-P(A_and_B)}}}
{{{P(A_or_B)=3/36+6/36-1/36}}}
{{{P(A_or_B)=8/36=2/9}}}