(18) भुजाओं वाले उत्तल बहुभुज में विकर्णों की संख्या कितनी है?
How many diagonals are there in a convex polygon with (18) sides?
Explanation opens after your attempt
A. (135)
Concept
The ways to choose two vertices are \(^{18}C_{2}\). Subtracting (18) sides gives (135) diagonals.
Why this answer is correct
The correct answer is A. (135). The ways to choose two vertices are \(^{18}C_{2}\). Subtracting (18) sides gives (135) diagonals.
Exam Tip
दो शीर्ष चुनने के तरीके \(^{18}C_{2}\) हैं। इनमें से (18) भुजाएं घटाने पर (135) विकर्ण मिलते हैं।
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