Q63.If n+2C6 = 11, then n satisfies the equation: n−2P2 (1) n2 + n −110 = 0 (2) n2 + 2n −80 = 0 (3) n2 + 3n −108 = 0 (4) n2 + 5n −84 = 0
What This Question Tests
Tests the application of fundamental permutation and combination formulas and algebraic manipulation to solve an equation and identify the quadratic equation satisfied by n.
Concepts Tested
Formulas Used
nCr = n! / (r! * (n-r)!)
nPr = n! / (n-r)!
📚 NCERT Sections This Tests
1.3 — Define The Following Terms:
Chemistry Class 11 · Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
5.12 — Write All The Geometrical Isomers Of [Pt(Nh3)(Br)(Cl)(Py)] And How Many Of
Chemistry Class 11 · Chapter 5
5.12 Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?
5.11 — Draw All The Isomers (Geometrical And Optical) Of:
Chemistry Class 11 · Chapter 5
5.11 Draw all the isomers (geometrical and optical) of: (i) [CoCl2(en)2] + (ii) [Co(NH3)Cl(en)2] 2+ (iii) [Co(NH3)2Cl2(en)]+
📋 Question Details
- Chapter
- Permutation & Combination
- Topic
- Combinations and Permutations
- Year
- 2016
- Shift
- 10 Apr Online
- Q Number
- Q63
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutations and Combinations
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