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10 July, 01:47

Which number is not in scientific notation? A. 11 times 10 to the 21st power? B. 5.7 times 10 to the 9th power? C. 3.1 times 10 to the - 12th power? Or D. 1.67 times 10 to the - 5th power?

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  1. 10 July, 02:45
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    A. it is not in scientific notation because the number in the ones place has to be greater than 0 but less than 9. So 11 is more than 9 so A is not in scientific notation.
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