Q.A unit vector perpendicular to the plane of vectors ˆ ˆ ˆ 2 6 3 a i j k = − − = − − = − − = − − and ˆ ˆ ˆ 4 3 b i j k = + − = + − = + − = + − is
Correct answer: 3 2 6 ˆ ˆ ˆ 7 7 7 − + i j k
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