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RRB NTPC Previous Year Questions – Mathematics (Set 1)

 

RRB NTPC Previous Year Questions – Mathematics (Set 1)

  1. यदि कोई वस्तु ₹500 में खरीदी जाती है और 20% लाभ पर बेची जाती है, तो विक्रय मूल्य क्या होगा?
    👉 उत्तर: ₹600
    (500 + 20% of 500 = 500 + 100 = 600)

  2. एक ट्रेन 90 किमी/घंटा की गति से चल रही है। वह 150 मीटर लंबे प्लेटफार्म को 20 सेकंड में पार करती है। ट्रेन की लंबाई क्या है?
    👉 उत्तर: 350 मीटर
    (Speed = 90 km/hr = 25 m/s; Distance = 25 × 20 = 500; Train length = 500 - 150 = 350)

  3. (a + b)² = 121 और ab = 20, तो a² + b² का मान क्या है?
    👉 उत्तर: 81
    ((a + b)² = a² + b² + 2ab ⇒ 121 = a² + b² + 40 ⇒ a² + b² = 81)

  4. 16 पुरुष किसी कार्य को 12 दिन में पूरा करते हैं। 24 पुरुष उसी कार्य को कितने दिन में पूरा करेंगे?
    👉 उत्तर: 8 दिन
    (16×12 = 24×x ⇒ x = 8)

  5. एक राशि साधारण ब्याज पर 2 वर्षों में ₹240 और 4 वर्षों में ₹480 हो जाती है। वार्षिक ब्याज दर क्या है?
    👉 उत्तर: ₹120 प्रति वर्ष
    (480 - 240 = ₹240 in 2 years ⇒ ₹120 per year)

  6. यदि 40% अंक प्राप्त करना उत्तीर्ण होने के लिए आवश्यक है और एक विद्यार्थी को 30 अंक मिलते हैं तथा वह 10 अंकों से फेल हो जाता है, तो कुल अंक कितने हैं?
    👉 उत्तर: 100
    (पासिंग मार्क्स = 30 + 10 = 40 ⇒ 40 = 40% of total ⇒ Total = 100)

  7. एक वर्ग की भुजा 12 cm है। उसका क्षेत्रफल कितना होगा?
    👉 उत्तर: 144 cm²
    (Area = side² = 12² = 144)

  8. 3 पुरुष एक काम को 24 दिनों में कर सकते हैं। 4 पुरुष उसी काम को कितने दिन में करेंगे?
    👉 उत्तर: 18 दिन
    (3×24 = 4×x ⇒ x = 18)

  9. दो संख्याओं का LCM = 120 और HCF = 10 है। यदि एक संख्या 20 है, तो दूसरी संख्या क्या होगी?
    👉 उत्तर: 60
    (Product of numbers = LCM × HCF = 120×10 = 1200 ⇒ 1200/20 = 60)

  10. यदि x = 2 और y = 3, तो (x² + y² + 2xy) का मान क्या होगा?
    👉 उत्तर: 25
    (= x² + y² + 2xy = 4 + 9 + 12 = 25)


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INDEX II

Q Bank - Establishment / Personnel Dept. (83) Q Bank - Electrical Engineering (80) Q Bank - OS / Clerk / Typist (72) Q B Engg (P Way & Work) (67) Q BANK - Operating (63) Group 'B' Exam (60) Q Bank - APO ( Asst. Personnel Officer) (57) QUESTION BANK WITH ANSWER (55) Q B Establishment (49) Q Bank - Goods Guards (45) Q Bank - OHE/TRD/PSI (36) Q B - CIVIL ENGINEERING (AEN) (27) Q B - Welfare Inspector (27) Q BANK - C & W ( Carriage & Wagon ) (26) Q Bank - Account (24) Q BANK - LOCO (23) Q BANK Exam - Station Master (23) Q Bank - Commercial (22) Q Bank - AOM (19) Q BANK - Station Master (18) Q Bank - S & T (15) 1. Syllabus (13) Q Bank - D & AR (Discipline and Appeals Rule) (12) Q Bank - Medical (12) Q Bank - Posts (Civil Engineering & P way) Dept (12) 2. Q Bank - Group D To C (11) INDEX (11) QB - ENGINEERING ( MECHANICAL ) (11) RRB EXAM (11) NTPC (10) Q Bank - LOCO (Diesel) (9) Q Bank - ACM (Assistant Commercial Manager) (9) Q BANK - Jr Engineer ( Diesel Mechanical ) (8) Q BANK - LOCO (AC) (8) Q Bank - Law Assistant (8) Q Bank - AME/AWM (7) Q Bank - Group D To C (6) Q Bank - General Knowledge (5) Q Bank - Publicity Inspector (5) Q Bank - Rajbhasha (राजभाषा) (5) Q Bank - Stores (5) Question & Answer (5) Q Bank - ADSTE / ASTE (4) Q Bank - AEE (4) Q Bank - Appointment On Compassionate Ground Exam (4) Q Bank - CLI (4) Q Bank - Commercial Instructor Exam (3) Q Bank - Engineering (Bridge) (3) Q Bank - IT (3) Q Bank - Protocol Inspector (3) Q Bank - RPF Department (3) Short Notes (3) Q BANK - Jr Engineer ( Mechanical ) (2) Q Bank - C & M (2) Q Bank - CCTC (2) Q Bank - Carpenter (2) Q Bank - General English (2) Q Bank - Jr Engineer (Tele) (2) Q Bank - Ministerial Staff (2) Q Bank - Track Machine (2) Q Bank -Section Controler (2) Video (2) ABB (1) Departmental Exam (1) FAQ (1) GDCE Exam (1) IRMS (Indian Railway Management Service (1) JUNIOR ENGINEER (Non -AC) GRADE - II (1) Minimum Wages Act (1) Project & Planning (1) Q BANK & Answer - C & W ( Carriage & Wagon ) (1) Q BANK - Shunting Master (1) Q Bank - Instructor (1) Q Bank - AMM (1) Q Bank - All Department (1) Q Bank - Ballast Train Checker (1) Q Bank - Complaints Inspector (1) Q Bank - GK (Computer) (1) Q Bank - Leave Rule (1) Q Bank - Mason (1) Q Bank - Maths (1) Q Bank - NPS (New Pension Scheme) (1) Q Bank - OS / Clerk Typist (1) Q Bank - Pass Rule (1) Q Bank - Planning Inspector (1) Q Bank - Railway (GK) (1) Q Bank - Stenographer (1) Q Bank - Technician (Ele) (1) Q Bank - Traffic Costing Inspector (1) Question Bank - Technicians of TLAC Group. (1) Short Notes - Establishment (1) Short Notes - Operating / Traffic (1) p (1)