I was wondering whether there is any elegant way of handling the question below.
John prepared 4 different letters to be sent to 4 different addresses. For each letter, he prepared an envelope with its correct address. If the 4 letters are to be put into the 4 envelopes at random, what is the probability that only 1 letter will be put into the envelope with its correct address?
a) 1/24
b) 1/8
c) 1/4
d) 1/3
e) 3/8
OA: d
John prepared 4 different letters to be sent to 4 different addresses. For each letter, he prepared an envelope with its correct address. If the 4 letters are to be put into the 4 envelopes at random, what is the probability that only 1 letter will be put into the envelope with its correct address?
a) 1/24
b) 1/8
c) 1/4
d) 1/3
e) 3/8
OA: d
