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The number of integers x,y,z,w such that x+y+z+w=20and x,y,z,w>= -1 The number of integers x,y,z,w such that x+y+z+w=20and x,y,z,w>= -1
Dear Pradeep total no of ways = 2 0 -1 C 3 = 19C 3 Hope it helps RegardsArun (askIITians forum expert
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