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Question

in throwing a die , what is the probability of getting- a) a multiple of 3 b) a no. less than 6
c) a no. divisible by 5 d) a no b/w 3 and 6.

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Solution

Let S be the sample space.S = 1,2,3,4,5,6.nS = 6a.Let E be the event of getting a multiple of 3Now, E = 3,6nE = 3PE = nEnS = 26 = 13b.Let F be the event of getting a number less than 6.Now, F = 1,2,3,4,5nF = 5Now, PF = nFnS = 56c.Let G be the event of getting a number divisible by 5.Now , G = 5nG = 1Now, PG = nGnS = 16d.Let H be the event of getting a number between 3 and 6.H = 4, 5nH = 2PH = nHnS = 26 = 13

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