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RRB Junior Engineer / DMS / CMA 2024 · Question 20 of 730

Write the expanded form of (5a + 7b + 3c)2.

  1. A25a2 + 49b2 + 9c2 + 70ab + 37bc + 30ac
  2. B25a2 + 49b2 + 9c2 + 70ab + 42bc + 30acCorrect
  3. C25a2 + 49b2 + 9c2 + 74ab + 42bc + 30ac
  4. D25a2 + 49b2 + 9c2 + 70ab + 42bc + 40ac

Answer: B. 25a2 + 49b2 + 9c2 + 70ab + 42bc + 30ac

Official answer key verified. Detailed explanation coming soon.

Source: Railway Junior Engineer 2024 Answer Key compilation (English) — testranking.in (Gagan Pratap) · reliable-secondary

← Q19View full paper (730 questions)Q21 →

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