Multiple choice

Three letters are written to three different persons and addresses on three envelopes are also written without looking at the addresses. What is the probability that all the letters go to the right address?

  1. $\(\frac{1}{3}\)$
  2. $\(\frac{2}{3}\)$
  3. $\(\frac{1}{6}\)$
  4. $\(\frac{1}{9}\)$

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total ways to arrange 3 letters in 3 envelopes = 3! = 6. Only 1 arrangement puts all letters correctly. Probability = 1/6. Option C (1/6) is correct.

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