1.

The number of ways in which 4 letters can be put in 4 addressed envelopes so that I: atleast one letter goes into wrong envelope is 23. II : no letter goes into the envelope meant for it is 9. III : all the letters goes into the right addressed envelopes is24. Which of the above statements is true

Answer»

only I is true
only III is true
both I and II are true
II & III are true

ANSWER :C


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