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22 February, 18:23

Which number is not in scientific notation? Select one: a. 11 ⋅ 10^21 b. 5.7 ⋅ 10^9 c. 3.1 ⋅ 10^-12 d. 1.67 ⋅ 10^-5

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  1. 22 February, 21:19
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    A. 11x10^21

    Scientific notation rules require that the coefficient number must be between 1 and 10 not inclusive of 10.
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