MCQ
$7 \vec{i}-2 \vec{j}+\vec{k}$ का मापांक है :
  • A
    $\sqrt{10}$
  • B
    $\sqrt{55}$
  • $3 \sqrt{6}$
  • D
    6

Answer

Correct option: C.
$3 \sqrt{6}$
(C)

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