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consider 7 digit no. x1x2….x7 where x1,x2,….x7 ?2 having property x4 is greatest digit and digit towards the left and right of x4 are in decreasing order. Total no. of such nos in which all digits are distinct is a)9C7*6C3 b) 9C6* 5C3 c) 10C7*6C3 d) 9C2*6C3

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9 years ago

Saurabh Koranglekar
10341 Points
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9 months 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