एक उत्तल (10)-भुज में कोई (3) विकर्ण अंदर एक ही बिंदु पर नहीं मिलते। विकर्णों के आंतरिक प्रतिच्छेद बिंदु कितने होंगे?
In a convex (10)-gon, no (3) diagonals meet at the same interior point. How many interior intersection points of diagonals are there?
Explanation opens after your attempt
Correct Answer
B. (210)
Concept
Each interior intersection is determined by choosing (4) vertices. Hence the number is \(^{10}C_{4}=210\).
Why this answer is correct
The correct answer is B. (210). Each interior intersection is determined by choosing (4) vertices. Hence the number is \(^{10}C_{4}=210\).
Exam Tip
हर आंतरिक प्रतिच्छेद (4) शीर्षों के चयन से बनता है। इसलिए संख्या \(^{10}C_{4}=210\) है।
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