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If 25C0 25C2 +2. 25C1 25C3 +3. 25C2 .2...

If `25C_0 25C_2 +2. 25C_1 25C_3 +3. 25C_2 .25C_4+....+ 24. 25C_23.25C_25=k. 49C_lambda+50C_mu` , then the value of `2k-lambda-mu` is greater than (where `mu,lambda lt 25`)

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