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Question

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

A
1681
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B
181
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C
8081
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D
6581
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Solution

The correct option is A 1681
When we roll a die for 4 time total cases are: 6×6×6×6

Favored cases are when we got numbers:2,3,4,5 =4 numbers

Probability for this case=4×4×4×46×6×6×6=1681

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