RRB NTPC CBT-1 previous year question
How many sides does a regular polygon have if each interior angle measures 150°?
Asked in RRB NTPC 2026 — 16 June Shift 1 · Quantitative Aptitude
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Correct answer: (D) 12 sides
Each interior angle is 150 degrees, so each exterior angle is 180-150=30 degrees. A regular polygon has 360/exterior-angle sides, so 360/30=12 sides.
हिंदी में प्रश्न
यदि प्रत्येक अंत:कोण की माप 150 हो, तो एक समबहुभुज में कितनी yore होती हैं?
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सही उत्तर: (D) 12 भुजाएँ
प्रत्येक आंतरिक कोण 150 डिग्री है, इसलिए प्रत्येक बाह्य कोण 180-150=30 डिग्री होगा। एक सम बहुभुज में भुजाओं की संख्या 360/बाह्य कोण होती है, अतः 360/30=12 भुजाएँ।
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