Three letters are written to different persons and addressess to three envelopes are also written. Without looking at the addresses, the probability that probability that the letters go into right envelopes, is

Options

A. `(2)/(3)`
B. `(1)/(6)`
C. `(1)/(5)`
D. `(2)/(5)`

Answer

B

Explanation

Total number of ways placing 3 letters in three envelopes
` = 3! = 3 xx 2 xx 1 = 6`
Out of these ways only one ways is correct.
`therefore` The required probability ` = (1)/(6)`