Question
Download Solution PDFX என்பவர் 100 கேள்விகளை முயற்சித்து 340 மதிப்பெண்களைப் பெறுகிறார். ஒவ்வொரு சரியான பதிலுக்கும் 4 மதிப்பெண்கள் மற்றும் தவறான பதிலுக்கு எதிர்மறையான ஒரு மதிப்பெண் என்றால், திரு. X அவர்கள் தவறாக பதிலளித்த கேள்விகளின் எண்ணிக்கை என்ன?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFதிரு. X முயற்சித்த தவறான கேள்விகள் a ஆக இருக்கட்டும்
சரியான கேள்வி = (100 – a)
கேள்விக்கு ஏற்ப
⇒ (100 – a) × 4 – a × 1 = 340
⇒ 400 – 4a – a = 340
⇒ 5a = 400 – 340 = 60
⇒ a = 60/5 = 12
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