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If, \(\frac{1}{{ }^{5} C_{t}}+\frac{1}{{ }^{6} C_{r}}=\frac{1}{{ }^{4} C_{t}}\), then the value of r equals to
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Dec 8, 2021
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Dec 20, 2021
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deepak01
If, \(\frac{1}{{ }^{5} C_{r}}+\frac{1}{{ }^{6} C_{r}}=\frac{1}{{ }^{4} C_{r}}\), then the value of r equals to
(A) 4
(B) 2
(C) 5
(D) 3
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Ans(B) correct answer
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