Question

what is probability of getting sum 9 from two throws of a dice​

Answer 1

1/3 is the correct answer for this

Answer 2

Answer:

1/9 or 1 out of 9 throws

Step-by-step explanation:

take the sample space consisting of all the possible cases

S = {(1,1) ; (1,2) ; (1,3) ; (1,4) ; (1,5) ; (1,6)

       (2,1) ; (2,2) ; (2,3) ; (2,4) ; (2,5) ; (2,6)

       (3,1) ; (3,2) ; (3,3) ; (3,4) ; (3,5) ; (3,6)

        ...........................................(6.5) ; (6,6)}

n(S) = 36

∴ there are 9 chances of having a sum of 9 :

     A = (3,6) ; (4,5) ; (5,4) ; (6,3)

   n(A) = 4

there probability = n(A) / n(s)

                            = 4/36

                            =1/9