There are 4 letters and 4 directed envelopes. These 4 letters are randomly inserted into the 4 envelops. What is the probability that the letters are inserted into the corresponding envelopes ?

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 ?

A: There are 4 letters and 4 addressed envelopes. If the letters are put in the random in the envelopes , the probability that all the letters may be placed in wrongly addressed envelopes is 3//8 . R: If n letters are put at random in the n addressed envelopes , the probability that all the letters may be in wrong envelopes = 1- (1)/(1!) +(1)/(2!)-(1)/(3!)+.....+((-1)^(n))/(n!)

There are four letters and four envelopes, the letters are placed into the envelopes at random, find the probability that all letters are placed in the wrong envelopes.

n different letters are put at random in n addressed envelopes. What is the probability that no letter is placed in the correct envelope?

There are 6 letters and 6 addressed envelopes . If the letters are put at random in the envelopes , the probability that all the letters may be placed in wrongly addressed envelopes is

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