(10) people की line में (A), (B), (C) इसी relative order में आएं, तो count क्या होगा?
In a line of (10) people, if (A), (B), (C) must appear in this relative order, what is the count?
Explanation opens after your attempt
B. \(\frac{10!}{3!}\)
Concept
Only one of the (3!) relative orders of these (3) people is valid. In exams handle fixed order restriction by symmetry division.
Why this answer is correct
The correct answer is B. \(\frac{10!}{3!}\). Only one of the (3!) relative orders of these (3) people is valid. In exams handle fixed order restriction by symmetry division.
Exam Tip
इन (3) लोगों के (3!) relative orders में केवल एक valid है। परीक्षा में fixed order restriction को symmetry division से करें।
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