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MHT CET202120 Sep 2021Morning ShiftMathematicsVector AlgebraActual

If a , b , c are three vectors which are perpendicular to b + c , c + a , and a + b respectively, such that | a |=2| b |=3,| c |=4 , then | a + b + c |=

Options

  1. A29
  2. B3
  3. C9
  4. D29

Correct answer

D. 29

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