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In how many different orders can 20 distinct books be arranged on a shelf?
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Subject
General Abilities
Topic
Probability & Counting
Subtopic
Permutations
Reviewed by Super AdminEditorial Policy
hard
400
380
2432902008176640020
2432902008176640000
Not applicable — CSS MPT uses four-option MCQs
Correct Answer
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Explanation
Number of arrangements=20!=2432902008176640000.…
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Concept Behind This Question
This question focuses on the concept of Permutations under the broader topic of Probability & Counting.
Related key concepts: CSS MPT, Probability & Counting, Permutations.
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Probability & Counting
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Question Details
- Subject:
- General Abilities
- Topic:
- Probability & Counting
- Subtopic:
- Permutations
- Difficulty:
- hard
- Source:
- https://www.khanacademy.org/math
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