Bihar Police Constable practice question
In a wedding hall, chairs are arranged in rows such that each row further from the stage has more chairs than the one before. The first four rows have 12, 16, 20 and 24 chairs respectively. How many chairs are in the fifth row?
From a Bihar Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (D) 28 chairs
The number of chairs increases by a constant 4 each row (12, 16, 20, 24). So the fifth row = 24 + 4 = 28 chairs.
हिंदी में प्रश्न
एक शादी के हॉल में, कुर्सियाँ इस तरह पंक्तियों में लगाई गई हैं कि मंच से जितनी दूर पंक्ति है उतनी ही अधिक कुर्सियाँ हैं। पहली चार पंक्तियों में क्रमशः 12, 16, 20 और 24 कुर्सियाँ हैं। पाँचवीं पंक्ति में कितनी कुर्सियाँ हैं?
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सही उत्तर: (D) 28 कुर्सियाँ
प्रत्येक पंक्ति में कुर्सियों की संख्या स्थिर रूप से 4 बढ़ती है (12, 16, 20, 24)। इसलिए पाँचवीं पंक्ति = 24 + 4 = 28 कुर्सियाँ।
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