Class 11 Mathematics - Permutations And Combinations - Derivations of formulas and their connections Hard Quiz

Level 58 • 1/50 questions • 30 seconds per question.

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Question 1 / 1 0 score

Answered 0/1 Correct 0 Time 00:30

(9) अलग-अलग वस्तुओं को पंक्ति में व्यवस्थित करना है। तीन विशेष वस्तुएं आपस में साथ रहें लेकिन उनका आंतरिक क्रम निश्चित हो। कितनी व्यवस्थाएं होंगी?

Explanation opens after your attempt

Correct Answer

A. (5040)

Step 1

Treat the three objects as a fixed-order block, giving (7) units. Hence there are (7!=5040) arrangements.

Step 2

The correct answer is A. (5040). Treat the three objects as a fixed-order block, giving (7) units. Hence there are (7!=5040) arrangements.

Step 3

तीन वस्तुओं को fixed-order ब्लॉक मानें, तब (7) इकाइयां बनती हैं। इसलिए (7!=5040) व्यवस्थाएं होंगी।

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