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how to find number of positive integral solution of x+y+z=20

Utkarsh , 8 Years ago
Grade 11
anser 1 Answers
Harsh Patodia

Last Activity: 8 Years ago

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.

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