RRB NTPC CBT-1 previous year question
The measure of an interior angle of a regular polygon is 162°. Find the number of sides of the polygon.
Asked in RRB NTPC 2026 — 14 June Shift 2 · Quantitative Aptitude
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Correct answer: (D) 20
Using interior angle = (n-2)*180/n = 162, we get 180n-360=162n, so 18n=360, giving n=20 sides.
हिंदी में प्रश्न
एक सम बहुभुज के आंतरिक कोण का माप 162 है। बहुभुज की भुजाओं की संख्या ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 22
आंतरिक कोण = (n-2)*180/n = 162 का उपयोग करने पर, 180n-360=162n मिलता है, अतः 18n=360, जिससे n=20 भुजाएं प्राप्त होती हैं।
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