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 • 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 • 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
Topic Wise MCQ

Mathematics Derivations of formulas and their connections MCQ Questions for Class 11 General

Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.

Share

Start Derivations of formulas and their connections Topic Quiz

Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.

Topic Navigation

Continue Chapter Revision

Derivations of formulas and their connections Practice Questions

Showing 381-390 of 600 questions.

Search

(n) distinct people की round-table seating में ((n-1)!) और row seating में (n!) का अंतर किससे आता है?

What causes the difference between ((n-1)!) for round-table seating and (n!) for row seating of (n) distinct people?

Explanation opens after your attempt
Correct Answer

A. Circular seating में rotations same मानी जाती हैंRotations are considered the same in circular seating

Explanation

Simple Explanation

Circle में एक व्यक्ति को fixed मानकर rotational overcount हटता है। परीक्षा में round table में one fixed method अपनाएं। / In a circle, fixing one person removes rotational overcount. In exams use the one-fixed method for round tables.

Open Question Page
Ask Friends

यदि (A) और (B) round table पर adjacent हों, तो (n) people के लिए block method count क्या होगा?

If (A) and (B) are adjacent at a round table, what is the block method count for (n) people?

Explanation opens after your attempt
Correct Answer

A. (2!(n-2)!)

Explanation

Simple Explanation

(A) और (B) को one block मानने पर circular objects (n-1) होते हैं। परीक्षा में circular block count में ((n-2)!) याद रखें। / Treating (A) and (B) as one block gives (n-1) circular objects. In exams remember ((n-2)!) in circular block counts.

Open Question Page
Ask Friends

(n) distinct objects की arrangements में exactly (r) selected positions filled हों और बाकी empty हों, तो कौन-सा formula naturally आता है?

If exactly (r) selected positions are filled by (n) distinct objects and the rest are empty, which formula naturally appears?

Explanation opens after your attempt
Correct Answer

B. \(^{n}P_r\)

Explanation

Simple Explanation

Positions ordered होते हैं और objects repeat नहीं होते, इसलिए falling choices मिलती हैं। परीक्षा में positions distinct हों तो permutation सोचें। / Positions are ordered and objects are not repeated, so falling choices arise. In exams think of permutations when positions are distinct.

Open Question Page
Ask Friends

(6) digits से (4)-digit numbers बनते हैं और repetition allowed है। Formula \(6^4\) क्यों है?

(4)-digit numbers are formed from (6) digits and repetition is allowed. Why is the formula \(6^4\)?

Explanation opens after your attempt
Correct Answer

A. हर position पर (6) choices independent हैंEach position has (6) independent choices

Explanation

Simple Explanation

Repetition allowed होने से choices कम नहीं होतीं। परीक्षा में allowed repetition में power formula use करें। / Choices do not decrease when repetition is allowed. In exams use the power formula when repetition is allowed.

Open Question Page
Ask Friends

(0) included digits से (4)-digit numbers बनाते समय first digit restriction क्यों अलग handle होती है?

Why is the first digit restriction handled separately when forming (4)-digit numbers from digits including (0)?

Explanation opens after your attempt
Correct Answer

A. क्योंकि first digit (0) होने पर number (4)-digit नहीं रहेगाBecause if the first digit is (0), the number will not remain (4)-digit

Explanation

Simple Explanation

Leading zero valid (4)-digit number नहीं बनाता। परीक्षा में digit arrangement में first place condition पहले देखें। / A leading zero does not form a valid (4)-digit number. In exams check the first-place condition first in digit arrangements.

Open Question Page
Ask Friends

किस derivation में \(^{n}P_r\) को \(n^r\) से बदलना गलत होगा?

In which derivation would replacing \(^{n}P_r\) by \(n^r\) be wrong?

Explanation opens after your attempt
Correct Answer

A. जब repetition not allowed हो और order important होWhen repetition is not allowed and order is important

Explanation

Simple Explanation

Without repetition में choices घटती हैं, इसलिए \(^{n}P_r\) चाहिए। परीक्षा में repetition condition पढ़े बिना power न लगाएं। / Without repetition, choices decrease, so \(^{n}P_r\) is needed. In exams do not apply powers without reading the repetition condition.

Open Question Page
Ask Friends

यदि (4) different prizes (10) students में बांटने हैं और एक student multiple prizes पा सकता है, तो count कौन-सा है?

If (4) different prizes are distributed among (10) students and one student can receive multiple prizes, what is the count?

Explanation opens after your attempt
Correct Answer

B. \(10^4\)

Explanation

Simple Explanation

हर different prize के लिए (10) independent student choices हैं। परीक्षा में distinct prizes with repetition allowed को power rule से करें। / Each distinct prize has (10) independent student choices. In exams use the power rule for distinct prizes with repetition allowed.

Open Question Page
Ask Friends

यदि (4) different prizes (10) students को देने हैं और कोई student एक से अधिक prize नहीं पा सकता, तो count क्या है?

If (4) different prizes are given to (10) students and no student can receive more than one prize, what is the count?

Explanation opens after your attempt
Correct Answer

C. \(^{10}P_4\)

Explanation

Simple Explanation

Prizes different हैं और recipients repeat नहीं हो सकते इसलिए ordered assignment है। परीक्षा में distinct prizes without repetition को permutation समझें। / Prizes are different and recipients cannot repeat, so it is an ordered assignment. In exams treat distinct prizes without repetition as permutation.

Open Question Page
Ask Friends

(4) identical prizes (10) students में बांटने हैं और एक student multiple prizes पा सकता है। Count किससे जुड़ी है?

(4) identical prizes are distributed among (10) students and one student can receive multiple prizes. Which count is connected with this?

Explanation opens after your attempt
Correct Answer

A. \({}^{13}C_9\)

Explanation

Simple Explanation

Identical prizes distribution stars and bars है, (4) stars और (9) bars। परीक्षा में identical prizes को combinations with repetition से जोड़ें। / Identical prize distribution is stars and bars, with (4) stars and (9) bars. In exams connect identical prizes with combinations with repetition.

Open Question Page
Ask Friends

(5) identical prizes (8) students में बांटने हैं और हर selected student को at most (1) prize मिले। Count क्या है?

(5) identical prizes are distributed among (8) students and each selected student gets at most (1) prize. What is the count?

Explanation opens after your attempt
Correct Answer

C. \(^{8}C_5\)

Explanation

Simple Explanation

Prizes identical हैं और सिर्फ (5) students choose करने हैं। परीक्षा में at most one with identical prizes को simple selection मानें। / Prizes are identical and only (5) students need to be chosen. In exams treat at most one with identical prizes as simple selection.

Open Question Page
Ask Friends