Question
Download Solution PDFX, 100 प्रश्नों के उत्तर देता है और 340 अंक प्राप्त करता है। यदि प्रत्येक सही उत्तर के लिए 4 अंक है और गलत उत्तर के लिए एक ऋणात्मक अंक है, तो श्री X द्वारा गलत उत्तर दिए गए प्रश्नों की संख्या क्या है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFमाना कि श्री X द्वारा दिए गए गलत उत्तर a है, तो
सही उत्तर = (100 – a)
प्रश्नानुसार
⇒ (100 – a) × 4 – a × 1 = 340
⇒ 400 – 4a – a = 340
⇒ 5a = 400 – 340 = 60
⇒ a = 60/5 = 12
Last updated on Jul 18, 2025
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