Home
Class 12
MATHS
n letters are written to n different per...

`n` letters are written to n different persons and addresses on the n envelopes are also written. If the letters are placed in the envelopes at random, the probability that at least one letter is not placed in the right envelope, is (A) `1-1/n` (B) `1-1/(2n)` (C) `1-1/(n^2)` (D) `1-1/(n!)`

Promotional Banner

Similar Questions

Explore conceptually related problems

There are 4 envelopes corresponding to 4 letters. If the letters are placed in the envelopes at random, probability that all the letters are not placed in the right envelopes is

There are n letters and n addressed envelopes . If the letters are placed in the envelopes at random , what is the probability that all the letters are not placed in the right evelope ?

Ravi writes 5 letters and addresses 5 envelopes. If the letters are placed in the envelopes at random, then the probability that a least one letter goes into the wrong envelope is

Ravi writes 5 letters and addresses 5 envelopes. If the letters are placed in the envelopes at random, then the probability that a least one letter goes into the wrong envelope is

Three letters are written to different persons and their addresses are also written on three envelopes. Letters are put at random in the envelopes. Then the probability that at least one letter is put in the correct envelope, is ______.

3 Letters are placed in 3 envelopes randomly. The probability that only one letter goes in right envelope is A 1/2 B 1/3 C 1/6 D 2/3

A person write 4 letters and addresses 4 envelopes. If the letters are placed in the envelopes at random, then the probability that all letters are not placed in the right envelopes, is a. 1/4 b. 11/24 c. 15/24 d. 23/24

A person write 4 letters and addresses 4 envelopes. If the letters are placed in the envelopes at random, then the probability that all letters are not placed in the right envelopes, is a. 1/4 b. 11/24 c. 15/24 d. 23/24

A person write 4 letters and addresses 4 envelopes. If the letters are placed in the envelopes at random, then the probability that all letters are not placed in the right envelopes, is a. 1/4 b. 11/24 c. 15/24 d. 23/24

n letters are written to different persons and their addresses are also written on n envelopes. Letters are put at random in the envelopes. Then the probability that at least one letter is put in wrong envelope, is _______.