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Which number is not in scientific notation? 11 ⋅ 10^21 5.7 ⋅ 10^9 3.1 ⋅ 10^−12 1.67 ⋅ 10^−5

User Sogartar
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The correct answer is: [A]: " 11 * 10^21 " .
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User Latze
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