Mark against the correct answer in each of the following:

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Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:

$[\hat{\mathrm{i}} \hat{\mathrm{j}} \hat{\mathrm{k}}]=?$

A. 0

B. 1

C. 2

D. 3

Solution:

Mark against the correct answer in each of the following:

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