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Probability – 21

21. An unbiased die with faces marked 1, 2, 3, 4, 5 & 6 is rolled four times. Out of four face values obtained the probability that the minimum face value is not less that 2 and the maximum face value is not greater than 5, is :

(a) 16/81
(b) 1/81
(c) 80/81
(d) 65/81

Answer : (a)

Explanation : No answer description available for this question. Let us discuss.

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