how many ways can you get a 9 when rolling 2 dice?

Question

campbell_st · Answer

it depends on the dice...number of faces... and what is on the faces

anonymous · Answer

both of the dice are 6 faced dice

campbell_st · Answer

ok... so draw a table 

|dw:1378151282083:dw|

and just complete it... you'll find all the 9s

anonymous · Answer

i did what you told me and i got 5 outcomes.

campbell_st · Answer

|dw:1378151881428:dw|

i think you have 1 to many

anonymous · Answer

oh i see i caught my mistake i added 8 and 1

campbell_st · Answer

no problem... diagrams and pictures are great tools when doing maths..... they help to show whats happening.

anonymous · Answer

one more question ..
so they asked me to find the possible out comes to get a 6 when rolling a 6 faced dice.  well i got 5 outcomes . 
then they ask what the complement is ? what does that mean

campbell_st · Answer

the complement means not rolling a 6

P(not 6) = 1 - P(6)

so P(6) = 1/6

now applying that to the complement 

P(not 6) = 1 - 1/6

so the answer is 5/6

anonymous · Answer

oh okay thanks :)