13probability 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
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
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7 Answers
1hmmm................ 1/3! =1/6 ?? (i am highly unsure... actually dunno probability... but stilll .......... [3])
13
1we can also tell it like....
3 letter can be posted in 3! ways.
only one is correct among them
so 1/3! = 1/6.
13skygirl's solution is more logical in terms of probability... well, abhirup has also done a gud job... nyc... [1]