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In P&C, we form giant in terms of x and find coefficient of a particular power of x. Like in a question –​ "Find the number of ways of filling three boxes A,B,C by 12 or less numbers of identical balls, if no box is empty, box B has at least 3 balls and box C has at most 5 balls.” In this question, an equation was formed in terms of and coefficient of x^12 was found. Can someone show me the working and clearly explain the concept behind finding the coefficient?
In P&C, we form giant  in terms of x and find coefficient of a particular power of x. Like in a question –​ "Find the number of ways of filling three boxes A,B,C by 12 or less numbers of identical balls, if no box is empty, box B has at least 3 balls and box C has at most 5 balls.” In this question, an equation was formed in terms of  and coefficient of x^12 was found.Can someone show me the working and clearly explain the concept behind finding the coefficient?

```
4 years ago

Saurabh Koranglekar
10341 Points
```							Dear studentPlease find the links belowhttps://www.askiitians.com/iit-jee-algebra/permutations-and-combinations/derangements-and-multinomial-theorem.aspxhttps://www.askiitians.com/forums/Algebra/22/23393/pc.htmhttps://www.askiitians.com/forums/Algebra/22/25493/pc.htmhttps://www.askiitians.com/forums/Algebra/22/42219/multinomial-theorem.htmhttps://www.askiitians.com/forums/Algebra/22/57809/multinomial-theorem.htmRegards
```
9 months ago
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• 101 Video Lectures
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• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions