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If vectors a = i + j + k, a.b = 2 and a x b = 2i + j - 3k, then (A) a + b = 5i - 4j + 2k

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If vectors a = i + j + k, a.b = 2 and a x b = 2i + j - 3k, then

(A) a + b = 5i - 4j + 2k

(B) a + b = 3i + 2k

(C) b = 2i - j + k

(D) b = i - 2j - 3k

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Answer is  (B), (C)

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