Q82.A boy needs to select five courses from 12 available courses, out of which 5 courses are language courses. If he can choose at most two language courses, then the number of ways he can choose five courses is
What This Question Tests
This question tests the ability to apply combinations with specific restrictions. It requires considering different cases for the number of language courses selected and summing the possibilities.
Concepts Tested
Formulas Used
nCr = n! / (r! * (n-r)! )
๐ NCERT Sections This Tests
5.12 โ Write All The Geometrical Isomers Of [Pt(Nh3)(Br)(Cl)(Py)] And How Many Of
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?
12.5 โ A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 ยท 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.
5.18 โ What Is Crystal Field Splitting Energy? How Does The Magnitude Of Do Decide
Chemistry Class 11 ยท Chapter 5
5.18 What is crystal field splitting energy? How does the magnitude of Do decide the actual configuration of d orbitals in a coordination entity?
๐ Question Details
- Chapter
- Permutation & Combination
- Topic
- Combinations with restrictions
- Year
- 2023
- Shift
- 24 Jan Shift 1
- Q Number
- Q82
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutations and Combinations
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