Question

There was once a man with an illiterate lady as his maid. He once wrote six letters to his six friends and he had six envelopes for it with the addresses written on the envelope. Suddenly, he had to go urgently on a job, so he handed the work of putting the letters into the envelope to the maid. What is the probability of the maid getting all the letters in the right envelope?
This is just a mathematical question.

Answer 1

(1/6)(1/5)(1/4)(1/3)(1/2)=1/720
probability of putting all  letters in correct envelop=1//720