Question
Download Solution PDFएक विद्यार्थी के अंक गलती से 45 के स्थान पर 65 दर्ज कर दिए गए। इससे कक्षा के औसत अंक में 1/3 की वृद्धि हो गई। कक्षा में छात्रों की संख्या है:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
अंकों के साथ औसत को 45 गिना गया = x
औसत जब अंक 65 गिने गए = x +
प्रयुक्त अवधारणा:
x = x =
यहाँ n छात्रों की कुल संख्या है।
माना बचे हुए छात्रों के अंकों का योग
गणना:
x =
nx =
x +
nx +
समीकरण 1 से nx का मान रखने पर
n = 60
∴ विद्यार्थियों की संख्या 60 है।
Last updated on Jul 22, 2025
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