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Grade: 

                        
The sum ∑ r=0 m 10 C r * 20 C m-r is maximum when m= 1)5 2)10 3)15 4)20 Show the steps..
2 years ago

Answers : (1)

Arun
24742 Points 
							
Dear student
 
if you expand it and solve it you will get 30Cm
 
also you can use P & C that it is written as 30Cm
 
 
now this maximum when m = 30/2 = 15
 
Regards
Arun (askIITians forum xpert)
2 years ago
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