If `12 P_r=11 P_6+6*11 P_5` then `r` is equal to
211 views · Published 13 October 2018 · 2:47 · Indexed 5 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `12 P_r=11 P_6+6*11 P_5` then `r` is equal to
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