Q1. Group A consists of 7 boys and 3 girls, while group B consists of 6 boys and 5 girls. The number of ways, 4 boys and 4 girls can be invited for a picnic if 5 of them must be from group A and the remaining 3 from group B, is equal to : (1) 8750 (2) 9100 (3) 8925 (4) 8575
What This Question Tests
This question tests the ability to apply combinations with conditions on selecting members from different groups to form a larger group with specified boy/girl counts. It requires considering multiple cases for distributing boys and girls from each group.
Concepts Tested
Formulas Used
C(n, k) = n! / (k! * (n-k)!)
๐ NCERT Sections This Tests
1.3 โ Define The Following Terms:
Chemistry Class 11 ยท Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
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?
1.1 โ Define The Term Solution. How Many Types Of Solutions Are Formed? Write Briefly
Chemistry Class 11 ยท Chapter 1
1.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
๐ Question Details
- Chapter
- Permutation & Combination
- Topic
- Combinations
- Year
- 2025
- Shift
- 24 Jan Shift 2
- Q Number
- Q1
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutation & Combination
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