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  9. Q8

RRB NTPC 2026 · Question 8 of 93

Select the set in which the numbers are related in the same way as are the numbers of the given sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (11, 3, 70) (9, 2, 55)

  1. A(8, 5, 60)
  2. B(7, 6, 70)
  3. C(10, 4, 80)
  4. D(8, 4, 60)Correct

Answer: D. (8, 4, 60)

Explanation

Information Given: (11, 3, 70) (9, 2, 55) Logic: Third number = 5 × (First + Second) (​ 11, 3, 70) (11 + 3) × 5 = 14 × 5 = 70 (9, 2, 55) (9 + 2) × 5 = 11 × 5 = 55 Check options: A) (8, 5, 60) (8 + 5) × 5 = 13 × 5 = 65 ≠ 60 B) (7, 6, 70) (7 + 6) × 5 = 13 × 5 = 65 ≠ 70 C) (10, 4, 80) (10 + 4) × 5 = 14 × 5 = 70 ≠ 80 D) (8, 4, 60) (8 + 4) × 5 = 12 × 5 = 60 ✔ Final Answer: (8, 4, 60) Final Correct Option: (D)

Source: RRB NTPC CBT-I Memory-Based Paper 16 March 2026 S1 (careerpower test-platform compilation) · memory-based

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