The expression `C(20,0).C(20,1)+C(20,1).C(20,2)+...+C(20,19).C(20,20)` equals `C(n,r)`, where `...
102 views · Published 11 October 2018 · 4:22 · Indexed 3 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The expression `C(20,0).C(20,1)+C(20,1).C(20,2)+...+C(20,19).C(20,20)` equals `C(n,r)`, where `r gt[n/2]`.The value of r is ..............{where [ ] is the step function}.
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