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18. A die has its six faces marked 0,1,1,1,6,6. Two suchdice are thrown together and the total score isrecorded.(NCERT Exemplar) |
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Answer» Lets first figure out how many different scores are possible as a combination of both dices are thrown -(0,0) = 0(0,1) = 1(0,6) = 6(1,1) = 2(1,6) = 7(6,6) = 12 To get a score of 7, one dice must show 1 and one dice must show 6.Probability of dice getting 1 = 3/6 = 1/2.Probability of dice getting 6 = 2/6 = 1/3. Thus probability of getting score 7 is =1/2 * 1/3 + 1/2*1/3 = 1/3. Hope this helps. If do, please mark as Brainlist. 4.3 |
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