InterviewSolution
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I : If the vectors a = (1, x, -2), b = (x, 3, -4) are mutually perpendicular, then x = 2 II : If a = I + 2j + 3k, b = - I + k, c = 3i + j and a + b is perpendicular to c then t = 5. |
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Answer» only I is ture |
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