Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

Which formula represents the number of ways of selecting r objects from n distinct objects without repetition when order matters?

Answer and explanation

Correct answer: \({}^nP_r=\frac{n!}{(n-r)!}\)

When order matters, the same selected objects in different orders form different arrangements, so \({}^nP_r=\frac{n!}{(n-r)!}\). Option B is for combinations, where order is ignored. Exam tip: choose permutation whenever order matters.

Related tags

PermutationsOrdered SelectionFactorialsClass 11 MathematicsCounting PrinciplesPermutations And CombinationsMathematicsClass 11 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.