(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
Correct Answer

A. (135)

Step 1

Concept

The ways to choose two vertices are \(^{18}C_{2}\). Subtracting (18) sides gives (135) diagonals.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

(18) भुजाओं वाले उत्तल बहुभुज में विकर्णों की संख्या कितनी है? / How many diagonals are there in a convex polygon with (18) sides?

Correct Answer: A. (135). Explanation: दो शीर्ष चुनने के तरीके \(^{18}C_{2}\) हैं। इनमें से (18) भुजाएं घटाने पर (135) विकर्ण मिलते हैं। / The ways to choose two vertices are \(^{18}C_{2}\). Subtracting (18) sides gives (135) diagonals.

Which concept should I revise for this Mathematics MCQ?

The ways to choose two vertices are \(^{18}C_{2}\). Subtracting (18) sides gives (135) diagonals.

What exam hint can help solve this Mathematics question?

दो शीर्ष चुनने के तरीके \(^{18}C_{2}\) हैं। इनमें से (18) भुजाएं घटाने पर (135) विकर्ण मिलते हैं।