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Three letters are dictated to three pers...

Three letters are dictated to three person and an envolopes at random so that each envelope contains exactly one letter. Find the probability that at least one letter is in its proper envelope.

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The correct Answer is:
`2/3`
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Knowledge Check

  • Six cards and six envelopes are numbered 1 ,2 , 3, 4 , 5,6 and cards are to be placed in envelopes so that each envelope contains exaxtly one card and no card is placed in the envelope bearing the same number and moreover the card numbered 1 is always placed in envelope number 2 . Then the number of ways it cann be done is -

    A
    264
    B
    265
    C
    53
    D
    67

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