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How mant different nine digit numbers can be formed from the number 223355888 by rearranging its digits so that odd digits occupy even positions
How mant different nine digit numbers can be formed from the number 223355888 by rearranging its digits so that odd digits occupy even positions

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6 years ago

bharat bajaj
IIT Delhi
122 Points
```							O E O E O E O E OThere are 9positions, 5 odd and 4 even.Also, there are 4 odd digits and 5 even digits.No. of ways in which odd digits can occupy evenpositions= 4! / (2! 2!)No. of ways in which even digits can occupy oddpositions= 5! / (3! 2!)Hence, required no. of ways = (4! 5!) / (2! 2! 3! 2!) = 60ThanksBharat Bajajaskiitians facultyIIT Delhi
```
6 years ago
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• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions