If a = 4 i + 3 j + k , b = i - 2 j + 2 k then ( a ( a ( a b ) ) ) =

MHT CET 2025 Mathematics question

If , then

Answer: (B)

Key fact: , so , and . For perpendicular vectors, . As printed (three factors of ), $ a×( a×( a× b))

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Question ID VK-101369