Q83.Some couples participated in a mixed doubles badminton tournament. If the number of matches played, so that no couple played in a match, is 840, then the total numbers of persons, who participated in the tournament, is ________.
What This Question Tests
This question involves a complex counting problem in combinations and permutations, requiring careful consideration of constraints (no couple playing together) in forming pairs for a match.
Concepts Tested
Formulas Used
nCr = n! / (r! * (n-r)!)
nPr = n! / (n-r)!
๐ NCERT Sections This Tests
8.17 โ Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
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8.17 Complete each synthesis by giving missing starting material, reagent or products
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Chemistry Class 11 ยท Chapter 5
5.12 Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?
14.2 โ Which Of The Statements Given In Exercise 14.1 Is True For P-Type
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14.2 Which of the statements given in Exercise 14.1 is true for p-type semiconductos.
๐ Question Details
- Chapter
- Permutation & Combination
- Topic
- Combinations and permutations with constraints
- Year
- 2023
- Shift
- 10 Apr Shift 1
- Q Number
- Q83
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutation and Combination
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