Question

Two dice are thrown simultaneously what is the probability of sum of two faces appear is 9 or 11​

Answer 1

Answer:

1/12 1/12

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Let S be the event of throwing 2 dice.

Total number of outcome, n(S)=36.

1.Let A be the event of getting sum of faces 9 .

A={(3,6) (4,5) (5,4) (6,3)}

n(A)=4

P(A)=n(A)/n(S)=4/36=1/9.=0.11.

2.Let B be the event of getting sum of faces 11.

B={(5,6) (6,5)}

n(B)=2

P(B)=n(B)/n(S)=2/36=1/18=0.05.