यदि (5) अलग points में से directed arrow बनाने हों तो कौन-सा formula connection सही है?
If directed arrows are to be made from (5) distinct points which formula connection is correct?
Explanation opens after your attempt
Correct Answer
B. \(^{5}P_2\)
Concept
In a directed arrow changing start and end changes the arrow. In exams use ordered pair or permutation when direction exists.
Why this answer is correct
The correct answer is B. \(^{5}P_2\). In a directed arrow changing start and end changes the arrow. In exams use ordered pair or permutation when direction exists.
Exam Tip
Directed arrow में start और end बदलने से arrow बदल जाता है। परीक्षा में direction हो तो ordered pair यानी permutation लगाएँ।
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