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Grade: 

                        
The number of integers x,y,z,w such that x+y+z+w=20and x,y,z,w>= -1
2 years ago

Answers : (1)

Arun
24742 Points 
							
Dear Pradeep
 
total no of ways
 
 = 2 0 -1 C 3
 
 = 19C 3
 
Hope it helps
 
Regards
Arun (askIITians forum expert
2 years ago
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