EASY ONE ON PROBABILITY

JEE Advanced 2015 Guidance › Algebra questions › EASY ONE ON PROBABILITY

All the spades are taken out froma a pack of cards.From these cards , cards are drawn one by one with out replacement till the ace of spades comes. the probability that the ace comes in the 4th draw is

a)1/13

b)12/13

c)4/13

d)none of these

#Mathematics #Algebra

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6 Answers

Abhishek Priyam ·2008-12-31 22:21:25

It got to be 1/13

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Subash ·2008-12-31 22:23:51

answer is correct asked a stupid question

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Lokesh Verma ·2008-12-31 22:24:18

Yes it is 1/13..

To me right now it seems too obvious to explain :(
I know that this is not a good thing :(

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Celestine preetham ·2008-12-31 22:24:49

yes 1/13

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Celestine preetham ·2008-12-31 22:25:57

in 4 th draw all cards ve equal chance of appearing so 1/13

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Subash ·2008-12-31 22:27:37

thnx guyz i made a mistake i was looking at the remaining set of cards thought it must be zero

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EASY ONE ON PROBABILITY

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