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A fair die is tossed repeatedly until a ...

A fair die is tossed repeatedly until a 6 is obtained. Let X denote the number of tosses rerquired.
The probability that X`ge3` equals

A

`(125)/(216)`

B

`(25)/(36)`

C

`(5)/(36)`

D

`(25)/(216)`

Text Solution

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The correct Answer is:
B
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ARIHANT MATHS-PROBABILITY-Exercise (Questions Asked In Previous 13 Years Exam)
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  11. Let U1 and U2 be two urns such that U1 contains 3 white and 2 red ball...

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  12. Let U1 and U2 be two urns such that U1 contains 3 white and 2 red ball...

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  18. four fair dice D1, D2,D3 and D4 each having six faces numbered 1,2,3,4...

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