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Grade: 11
        
how to find number of positive integral solution of x+y+z=20
3 years ago

Answers : (1)

Harsh Patodia
IIT Roorkee
askIITians Faculty
906 Points
							
Min values of x,y and z will be 1 so remaining 17 have to be distributed over these numbers
Just divide 17 in three parts using 2 partitions which can be done by 19C2 ways as 2 paritions can be placed around 17 things. So there will be 19spaces in all.
3 years ago
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