1.

a postman has to dilever five letters to five different house. mischievously, he post one letter through each door without looking to see if it is the correct address. in how many different ways could he do this so that exactly two of the five houses receieve the correct letter

Answer» a postman has to dilever five letters to five different house. mischievously, he post one letter through each door without looking to see if it is the correct address. in how many different ways could he do this so that exactly two of the five houses receieve the correct letter


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