SSC CHSL Tier-1 previous year question
Three groups with average marks 50, 60, 70 have 20, 30, 50 students respectively. Find the combined average.
Asked in SSC CHSL Tier-1 (14 Nov 2025 Shift 1) · Quantitative Aptitude
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Correct answer: (A) 63
Weighted average = (20×50+30×60+50×70)/100 = (1000+1800+3500)/100 = 6300/100 = 63.
हिंदी में प्रश्न
छात्रों के तीन समूहों के औसत अंक क्रमशः 50, 60 और 70 हैं। इन समूहों में छात्रों की संख्या 20, 30 और 50 है। संयुक्त औसत ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 63
भारित औसत = (20×50+30×60+50×70)/100 = 6300/100 = 63.
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