A special die is so constructed that the probabilities of throwing 1, 2, 3, 4, 5...

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A special die is so constructed that the probabilities of throwing 1, 2, 3, 4, 5 and 6 are (1 k)/6, (1+2k) / 6, (1 - k)/6, (1 + k)/6, (1 2k) / 6 and (1+ k)/6, respectively. If two such dice are thrown and the probability of 1 2 getting a sum equal to lies between and then the 9 integral value of k is 9 " A special die is so constructed that the probabilities of throwing 1, 2, 3, 4, 5 and 6 are (1 k)/6, (1+2k) / 6, (1 - k)/6, (1 + k)/6, (1 2k) / 6 and (1+ k)/6, respectively. If two such dice are thrown and the probability of 1 2 getting a sum equal to lies between and then the 9 integral value of k is 9 "

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