Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is a) (n+2).2 n-1 b) 3n C n c) 3n C n – 2n C n d) 3n

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Arun · Answer

Dear student I am getting my answer as (n+2) 2^(n-1) Which is option A. Please let me know the answer if this is correct tyen I will share my solution

Rajesh · Answer

Hi Arun, your answer is corrcet. Appreciate if you share the solution. Regards, Rajesh Thakker. ***************************************************************************************************************

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Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is a) (n+2).2 n-1 b) 3n C n c) 3n C n – 2n C n d) 3n

Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is

a) (n+2).2^n-1 b) ³ⁿC_n c) ³ⁿC_n – ²ⁿC_n d) 3n

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Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is a) (n+2).2 n-1 b) 3n C n c) 3n C n – 2n C n d) 3n

Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is a) (n+2).2n-1 b) 3nCn c) 3nCn – 2nCn d) 3n

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Number of ways of selecting n things out of 3n things of which n are alike of one kind and n are alike of second kind and rest are all different is

a) (n+2).2^n-1 b) ³ⁿC_n c) ³ⁿC_n – ²ⁿC_n d) 3n