1.) There are 4 letters and 4 corresponding envelopes. If we put the 4 letters into the envelopes at random, what is the probability that only one letter was into the exact envelope?
A) 1/8
B) 1/6
C) 1/3
D) 1/2
E) 3/4
I dont know the official answer but cannot get the right solution. any help will be greatly appreciated.
A) 1/8
B) 1/6
C) 1/3
D) 1/2
E) 3/4
I dont know the official answer but cannot get the right solution. any help will be greatly appreciated.
