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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).2n-1       b) 3nCn       c) 3nCn – 2nCn        d) 3n`
one year ago

Arun
24740 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
```
one year ago
Rajesh
12 Points
```							Hi Arun, your answer is corrcet. Appreciate if you share the solution. Regards, Rajesh Thakker. ***************************************************************************************************************
```
one year ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions