Guest

Please answer this question ..................................

Please answer this question ..................................

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
According to the question
 
2nC3r-1 = 2nCr+1
 
3r – 1 = r+ 1
 
r = 1
and 
 
2n- 3r + 1 = r + 1
 
n = 2r

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