SSC GD Constable previous year question
The average marks of 13 students was 130. But later it was found that the score of one student was wrongly entered as 23 instead of 32. What is the correct average of their score?
Asked in SSC GD Constable 2024: 20 Feb 2024 Shift 4 · Quantitative Aptitude
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Correct answer: (D) 130.69
Correction = 32−23=9. New sum = 13×130+9=1,699. New average = 1,699/13 ≈ 130.69.
हिंदी में प्रश्न
13 विद्यार्थियों के औसत अंक 130 थे। लेकिन बाद में यह पाया गया कि एक विद्यार्थी के अंक गलती से 32 के स्थान पर 23 दर्ज कर लिए गए थे। उनके अंक का सही औसत क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 131.72
Correction = 32−23=9. New sum = 13×130+9=1,699. New average = 1,699/13 ≈ 130.69.
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