



 
Muhammadibeaheem, There is something wrong in the wording of your first problem. Not every integer greater than or equal t0 1 is divisible by 3. For your second question if you are to select a president, secretary and treasurer from 4 people then you are leaving 1 person without a position. Thus the number of ways of selecting 3 people from 4 people is the same as the number of ways of selecting 1 person from 4 people. How many ways are there of selecting 1 person from 4? Penny  


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