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If the position vectors of the two points A and B are vector i + 2j - 3k and vector 2i - 4j + k respectively, then |AB| is

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If the position vectors of the two points A and B are vector i + 2j - 3k and vector 2i - 4j + k respectively, then |AB| is

A. √53

B. 53

C. 1

D. 6

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Correct option: A. √53

Explanation:

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