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RRB NTPC Undergraduate CBT 1 2024 · Shift 1

RRB NTPC Undergraduate CBT 1 13 Aug 2025 Shift 1 – Question Paper

100 questions · 100 marks · 90 minutes · +1 for a correct answer, −1/3 for a wrong one. With answer key and detailed solutions in Hindi and English.

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Paper pattern

SectionQuestionsMarks
General Awareness4040
Mathematics3030
General Intelligence and Reasoning3030

Sample questions from this paper

Q1.
In March 2025, which company unveiled Vayu, an overall AI cloud offering for
enterprises?
मार्च 2025 में, किस कंपनी ने उद्यमों (enterprises) के लिए एक समग्र AI क्लाउड पेशकश, Vayu, का अनावरण किया?
  1. AReliance Communicationरिलायंस कम्युनिकेशन
  2. BTata Communicationटाटा कम्युनिकेशन
  3. CAirtel Communicationएयरटेल कम्युनिकेशन
  4. DBajaj Communicationबजाज कम्युनिकेशन
Show answer

Concept: In March 2025 Tata Communications launched Vayu, an AI cloud platform for enterprises.

  1. Vayu combines AI cloud, GPU-as-a-service and platform tools so businesses can build and run AI applications.
  2. It was announced by Tata Communications, the Tata Group's digital-infrastructure company.
  3. Reliance, Airtel and Bajaj are not linked to Vayu.

Yaad rakhein: Vayu = "wind" – Tata's AI cloud blows across enterprises.

Answer: (B) Tata Communication

अवधारणा: मार्च 2025 में Tata Communications ने उद्यमों (enterprises) के लिए AI क्लाउड प्लेटफॉर्म Vayu लॉन्च किया।

  1. Vayu में AI cloud, GPU-as-a-service और प्लेटफॉर्म टूल एक साथ मिलते हैं ताकि कंपनियाँ AI ऐप बना सकें।
  2. इसे Tata Group की डिजिटल इंफ्रास्ट्रक्चर कंपनी Tata Communications ने घोषित किया।
  3. Reliance, Airtel या Bajaj का Vayu से संबंध नहीं है।

याद रखें: Vayu = Tata का AI क्लाउड।

उत्तर: (B) Tata Communication

RRB NTPC Undergraduate CBT 1General AwarenessCurrent Affairs – Technology
Q41.
The number of prime numbers lying between 476 and 491, both included, is:
476 और 491 (दोनों सहित) के बीच स्थित अभाज्य संख्याओं की संख्या है:
  1. A4
  2. B2
  3. C5
  4. D3
Show answer

Concept: Test only odd numbers not ending in 5, using primes up to 491≈22 (2, 3, 5, 7, 11, 13, 17, 19).

  1. Odd candidates: 477, 479, 481, 483, 487, 489, 491.
  2. 477=9×53, 481=13×37, 483=3×161, 489=3×163 → composite.
  3. 479, 487 and 491 have no factor up to 22 → prime.

Trick: Strike out multiples of 3 by digit sum first, then test 7, 11, 13 only for the rest.

Answer: (D) 3

अवधारणा: केवल विषम और 5 पर न खत्म होने वाली संख्याएँ जाँचें, 491≈22 तक के अभाज्यों (2, 3, 5, 7, 11, 13, 17, 19) से।

  1. विषम संख्याएँ: 477, 479, 481, 483, 487, 489, 491।
  2. 477=9×53, 481=13×37, 483=3×161, 489=3×163 → भाज्य।
  3. 479, 487, 491 का 22 तक कोई गुणनखंड नहीं → अभाज्य।

ट्रिक: पहले अंकों के योग से 3 के गुणज हटाएँ, फिर बाकी पर 7, 11, 13 जाँचें।

उत्तर: (D) 3

RRB NTPC Undergraduate CBT 1MathematicsNumber System – Prime Numbers
Q71.
If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’, then what will be come in place of the question mark (?) in the following equation?
18 A 3 D 8 B 2 C 12 = ?
यदि ‘A’ का अर्थ ‘÷’, ‘B’ का अर्थ ‘×’, ‘C’ का अर्थ ‘+’ और ‘D’ का अर्थ ‘−’ है, तो निम्नलिखित समीकरण में प्रश्न चिह्न (?) के स्थान पर क्या आएगा?
18 A 3 D 8 B 2 C 12 = ?
  1. A12
  2. B7
  3. C2
  4. D10
Show answer

Concept: Replace letters with signs, then apply BODMAS.

  1. 18÷3−8×2+12
  2. =6−16+12
  3. =2

Trick: Do ÷ and × first (6 and 16), then + and − left to right.

Answer: (C) 2

अवधारणा: अक्षरों को चिह्नों से बदलें, फिर BODMAS लगाएँ।

  1. 18÷3−8×2+12
  2. =6−16+12
  3. =2

ट्रिक: पहले ÷ और × (6 और 16), फिर + और −।

उत्तर: (C) 2

RRB NTPC Undergraduate CBT 1General Intelligence and ReasoningMathematical operations

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