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Which of the following correctly expresses the number below in scientific notation 2,210,000,000

Which of the following correctly expresses the number below in scientific notation-example-1
User Piyas De
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F - because you must move the decimal place 9 spaces to the left in order to have only a single digit in front of the decimal place. (There can never be more than one otherwise it is no longer scientific notation.

User PrakashG
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