RRB Group D previous year question
Find the ratio between the fourth proportional of 1, 3 and 6 to the mean proportional of 12 and 3.
Asked in RRB Group D CBT-1: 09 Jan 2026 Shift 1 · Quantitative Aptitude
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Correct answer: (B) 3:1
Fourth proportional of 1,3,6: 1:3::6:x → x=18. Mean proportional of 12,3: √36=6. Ratio 18:6 = 3:1.
हिंदी में प्रश्न
1, 3 और 6 के चतुर्थानुपाती तथा 12 और 3 के मध्यानुपाती के बीच अनुपात ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 3 : 1
सही उत्तर: विकल्प B (3 : 1)
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