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probability 1) Three letters are dictated to three persons and an envelope is addressed to each of them, the letters are inserted into the envelopes at random so that each envelope contains exactly one letter. Find the probability that at least one letter is in its proper envelope.

moidin afsan , 12 Years ago
Grade 11
anser 2 Answers
Sher Mohammad
Total number of ways=3!=6
At least one letter in correct=exactly one letter in correct+all in correct
=3+1
probablity =4/6

Sher Mohammad
B.tech, IIT Delhi
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Last Activity: 12 Years ago
moidin afsan
thak u
Last Activity: 12 Years ago
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