probability

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3 letters are to be sent to diff persons and addresses on the 3 envelops are also written. without looking at the addresses,the probabilities that the letters go into the right envelope is equal to

#Mathematics #Algebra

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7 Answers

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skygirl ·2009-01-11 18:14:40

hmmm................ 1/3! =1/6 ?? (i am highly unsure... actually dunno probability... but stilll .......... [3])

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Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-01-11 19:33:08

probability of A getting the right letter is 1/3

then of the remaining 2 letters B gettnig the right is 1/2

C will automatically get the right one.

Hence probability is 1/3*1/2=1/6

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akhil mm ·2009-01-11 21:27:05

good dude

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skygirl ·2009-01-12 07:34:31

we can also tell it like....

3 letter can be posted in 3! ways.

only one is correct among them

so 1/3! = 1/6.

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Lokesh Verma ·2009-01-12 07:48:29

good one sky :)

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MAK ·2009-01-12 07:49:17

skygirl's solution is more logical in terms of probability... well, abhirup has also done a gud job... nyc... [1]

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skygirl ·2009-01-12 07:58:40

tx bhaiya n tx ma'Q' :P

([3])

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