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The notation "4e 21" on a calculator represents the number ( 4 \times 10^{21} ). The "e" stands for exponent, indicating that the number 4 should be multiplied by 10 raised to the power of 21. This is a shorthand way of expressing very large numbers in scientific notation. Thus, it equals 4 followed by 21 zeros.

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2d ago

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Q: What does 4e 21 mean on a calculator?
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