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fenix001 [56]
3 years ago
7

A clerk has 4 different letters that need to go in 4 different envelopes. What is the probability that all 4 letters are placed

in the correct envelopes?
Mathematics
1 answer:
Burka [1]3 years ago
7 0

1/4 * 1/3 * 1/2 * 1/1 = 1/24 chance that all 4 letters are placed in the correct envelopes.

With the first envelope, there are 4 choices of letters, so the probability of picking the correct letter is 1/4.

With the second envelope, there are 3 remaining letters, so the probability of picking the correct letter is 1/3.

The same logic follows the the third and final letter.

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