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In one year, the number of times an average person's heart beats is 4.21 107

Which is equivalent to this number?
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In one year, the number of times an average person's heart beats is 4.21 107 Which-example-1
User Ksemel
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2 Answers

8 votes
42,100,000 is equivalent
User FlySoFast
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6 votes
42100000, so this is in scientific notation.
User Pleasedesktop
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