Question
Download Solution PDF100টি প্রশ্নের উত্তর লিখে X পেয়েছে 340 নম্বর। যদি প্রতিটি সঠিক উত্তরের জন্য 4 নম্বর এবং ভুল উত্তরের জন্য ঋণাত্মক এক নম্বর ধার্য করা হয়, তাহলে X মহাশয় কতগুলি উত্তর ভুল লিখেছে?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFধরা যাক, X মহাশয় a সংখ্যক প্রশ্নের উত্তর ভুল লিখেছে তাহলে,
সঠিক উত্তরের সংখ্যা = (100 – a)
প্রশ্নানুসারে,
⇒ (100 – a) × 4 – a × 1 = 340
⇒ 400 – 4a – a = 340
⇒ 5a = 400 – 340 = 60
⇒ a = 60/5 = 12
Last updated on Jul 17, 2025
-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025.
-> The RRB Group D Exam Date will be announced on the official website. It is expected that the Group D Exam will be conducted in August-September 2025.
-> The RRB Group D Admit Card 2025 will be released 4 days before the exam date.
-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.
-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a NAC granted by the NCVT.
-> Check the latest RRB Group D Syllabus 2025, along with Exam Pattern.
-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.
-> Prepare for the exam with RRB Group D Previous Year Papers.