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Question 24Asked in RRB JE CBT-1, 16 Dec 2024, Shift 2 (12:45 PM)

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

  1. A25a² + 49b² + 9c² + 70ab + 37bc + 30ac
  2. B25a² + 49b² + 9c² + 70ab + 42bc + 30ac
  3. C25a² + 49b² + 9c² + 74ab + 42bc + 30ac
  4. D25a² + 49b² + 9c² + 70ab + 42bc + 40ac
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Correct answer: (B) 25a² + 49b² + 9c² + 70ab + 42bc + 30ac

From RRB JE CBT-1 PYQ 16 Dec 2024, Shift 2 (12:45 PM)

This is question 24 of RRB JE CBT-1 PYQ 16 Dec 2024, Shift 2 (12:45 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.