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How many digits are in 28 × 510, when written out completely?
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25 Mar 2022, 02:00
25 Mar 2022, 02:00
Expert Reply
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Question Stats:
90% (00:47) correct
10% (00:41) wrong based on 10 sessions
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How many digits are in \(2^8 × 5^{10}\), when written out completely?
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10
Part of the project: GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
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GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: How many digits are in 28 × 510, when written out completely?
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27 Mar 2022, 00:37
27 Mar 2022, 00:37
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\(2^8 × 5^{10}\)
\(5^2 * (2^8 * 5^8)\)
\(25 * 10^8\)
\(2,500,000,000\)
Total \(10\) digits
Answer 10
\(5^2 * (2^8 * 5^8)\)
\(25 * 10^8\)
\(2,500,000,000\)
Total \(10\) digits
Answer 10
gmatclubot
Re: How many digits are in 28 × 510, when written out completely? [#permalink]
27 Mar 2022, 00:37
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