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ty is \( 30 . \sqrt{2} \) is (in proper significant number) \( 1.4 \) (1) \( 1.414 \) (2) \( 1.4 \) (3) \( 1.0 \) (4) 1

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Answer: (4) 1

\(\sqrt2\) ​ =1.41421356237 

Since 2 has 1 significant digit,

Hence the \(\sqrt2\) ​ has only one significant digit.

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