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How many different pairs can be chosen from 9 distinct people?
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Subject
General Abilities
Topic
Probability & Counting
Subtopic
Combinations
Reviewed by Super AdminEditorial Policy
hard
36
18
362880
45
Not applicable — CSS MPT uses four-option MCQs
Correct Answer
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Explanation
Number of pairs=C(9,2)=9×8/2=36.…
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Concept Behind This Question
This question focuses on the concept of Combinations under the broader topic of Probability & Counting.
Related key concepts: CSS MPT, Probability & Counting, Combinations.
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Probability & Counting
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Question Details
- Subject:
- General Abilities
- Topic:
- Probability & Counting
- Subtopic:
- Combinations
- Difficulty:
- hard
- Source:
- https://www.khanacademy.org/math
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