Q72.The coefficient of x4 in the expansion of (1 + x + x2) 10 is ________
What This Question Tests
This question tests the ability to find the coefficient of a specific term in the expansion of a trinomial raised to a power, requiring the application of the multinomial theorem or systematic case analysis.
Concepts Tested
Formulas Used
General term in (a+b+c)ⁿ: n!/(p!q!r!) * aᵖ bᵠ cʳ where p+q+r = n
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
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?
📋 Question Details
- Chapter
- Binomial Theorem
- Topic
- Coefficient of a term in trinomial expansion
- Year
- 2020
- Shift
- 09 Jan Shift 1
- Q Number
- Q72
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 8: Binomial Theorem
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