(n) अलग वस्तुओं के (r) वस्तुओं वाले उपसमुच्चयों की संख्या कौन-सा सूत्र देता है?

Which formula gives the number of subsets having (r) objects from (n) distinct objects?

Explanation opens after your attempt
Correct Answer

C. \(^{n}C_r\)

Step 1

Concept

A subset has no order so \(^{n}C_r\) is correct. In exams treat a subset as unordered selection.

Step 2

Why this answer is correct

The correct answer is C. \(^{n}C_r\). A subset has no order so \(^{n}C_r\) is correct. In exams treat a subset as unordered selection.

Step 3

Exam Tip

उपसमुच्चय में क्रम नहीं होता इसलिए \(^{n}C_r\) सही है। परीक्षा में subset को unordered selection मानें।

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Mathematics Answer, Explanation and Revision Hints

(n) अलग वस्तुओं के (r) वस्तुओं वाले उपसमुच्चयों की संख्या कौन-सा सूत्र देता है? / Which formula gives the number of subsets having (r) objects from (n) distinct objects?

Correct Answer: C. \(^{n}C_r\). Explanation: उपसमुच्चय में क्रम नहीं होता इसलिए \(^{n}C_r\) सही है। परीक्षा में subset को unordered selection मानें। / A subset has no order so \(^{n}C_r\) is correct. In exams treat a subset as unordered selection.

Which concept should I revise for this Mathematics MCQ?

A subset has no order so \(^{n}C_r\) is correct. In exams treat a subset as unordered selection.

What exam hint can help solve this Mathematics question?

उपसमुच्चय में क्रम नहीं होता इसलिए \(^{n}C_r\) सही है। परीक्षा में subset को unordered selection मानें।