Answer:
Option 4 is correct. .
Explanation:
According to scientific notation
Scientific notation: a number and multiply by power of 10.
where 0<k<10 and n is an integer.
Option 1, 2 and 3 are not in scientific notation. So they are not accurate.
So, is accurate measurement.
Hence, the correct answer is .
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Answers & Comments
Answer:
Option 4 is correct. .
Explanation:
According to scientific notation
Scientific notation: a number and multiply by power of 10.
where 0<k<10 and n is an integer.
Option 1, 2 and 3 are not in scientific notation. So they are not accurate.
So, is accurate measurement.
Hence, the correct answer is .