यदि (7) वस्तुओं में से (4) चुनी जाएँ तो छोड़ने वाली वस्तुओं की संख्या से कौन-सा समान combination बनेगा?

If (4) objects are chosen from (7) objects which equal combination is formed by the number of objects left?

Explanation opens after your attempt
Correct Answer

B. \(^{7}C_3\)

Step 1

Concept

Choosing (4) means leaving (3) so \(^{7}C_4=^{7}C_3\). In exams look at both chosen and not chosen.

Step 2

Why this answer is correct

The correct answer is B. \(^{7}C_3\). Choosing (4) means leaving (3) so \(^{7}C_4=^{7}C_3\). In exams look at both chosen and not chosen.

Step 3

Exam Tip

(4) चुनने का अर्थ (3) छोड़ना है इसलिए \(^{7}C_4=^{7}C_3\) है। परीक्षा में chosen और not chosen दोनों देखें।

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Mathematics Answer, Explanation and Revision Hints

यदि (7) वस्तुओं में से (4) चुनी जाएँ तो छोड़ने वाली वस्तुओं की संख्या से कौन-सा समान combination बनेगा? / If (4) objects are chosen from (7) objects which equal combination is formed by the number of objects left?

Correct Answer: B. \(^{7}C_3\). Explanation: (4) चुनने का अर्थ (3) छोड़ना है इसलिए \(^{7}C_4=^{7}C_3\) है। परीक्षा में chosen और not chosen दोनों देखें। / Choosing (4) means leaving (3) so \(^{7}C_4=^{7}C_3\). In exams look at both chosen and not chosen.

Which concept should I revise for this Mathematics MCQ?

Choosing (4) means leaving (3) so \(^{7}C_4=^{7}C_3\). In exams look at both chosen and not chosen.

What exam hint can help solve this Mathematics question?

(4) चुनने का अर्थ (3) छोड़ना है इसलिए \(^{7}C_4=^{7}C_3\) है। परीक्षा में chosen और not chosen दोनों देखें।