Q63.If n is the number of irrational terms in the expansion of (31/4 + 51/8) 60 , then (n −1) is divisible by : (1) 26 (2) 30 (3) 8 (4) 7
What This Question Tests
The question requires identifying the conditions on 'r' for the general term in a binomial expansion to be rational, then counting these terms to find the number of irrational terms.
Concepts Tested
Formulas Used
T_{r+1} = nCr * a^(n-r) * b^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.
5.28 — How Many Ions Are Produced From The Complex Co(Nh3)6Cl2 In Solution?
Chemistry Class 11 · Chapter 5
5.28 How many ions are produced from the complex Co(NH3)6Cl2 in solution? (i) 6 (ii) 4 (iii) 3 (iv) 2 139 Coordination Compounds Reprint 2025-26
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
- Rational terms in binomial expansion
- Year
- 2021
- Shift
- 16 Mar Shift 1
- Q Number
- Q63
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 8: Binomial Theorem
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