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Grade: 11
        
 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) 3nCn2nCn        d) 3n
19 days ago

Answers : (2)

Arun
15947 Points
							
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
19 days ago
Rajesh
12 Points
							
Hi Arun, your answer is corrcet. Appreciate if you share the solution. Regards, Rajesh Thakker. 
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19 days ago
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