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Question

A die is numbered in such a way that its faces show the numbers 1,2,2,3,3,6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws:
What is the probability that the total score is
(i) even? (ii) 6? (iii) at least 6?
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Solution

+1 2 23 3 6
1 2 3 3 4 4 7
2 3 4 4 5 5 8
2 3 4 4 5 58
34 5 5 6 6 9
34 5 5 6 6 9
6 7 8 8 9 9 12
Total no. of possible outcomes when 2 dice are thrown 6×6=36

i) Total times when the sum is even =18
P(Getting an even no.)=1836=12

ii) Total times when the sum is 6 =4
P(Getting sum as 6)=436=19

iii) Total times when the sum is atleast 6 =15
P(Getting sum atleast 6.)=1536=512

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