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The product of the five smallest two-digit prime numbers is closest to

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Carcass
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The product of the five smallest two-digit prime numbers is closest to [#permalink] New post   11 Aug 2021, 01:10
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The product of the five smallest two-digit prime numbers is closest to which of the following powers of 10?

(A) \(10^9\)
(B) \(10^8\)
(C) \(10^7\)
(D) \(10^6\)
(E) \(10^5\)


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Question part of the project GRE Quant/Math Extreme Challenge Daily (2021) Edition
GRE - Math Book
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Re: The product of the five smallest two-digit prime numbers is closest to [#permalink] New post   11 Aug 2021, 02:33
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The smallest two-digit prime nos are 11, 13, 17, 19, 23

The answer will surely be greater than \(10^5\) and closer to \(10^6\).
One can try the calculator
OR
\(11∗13∗17∗18∗23 ≈ 10∗10∗20∗20∗25 = 100∗10,000=10^6\)

Answer D
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Re: The product of the five smallest two-digit prime numbers is closest to [#permalink] New post   11 Sep 2021, 12:50
Why don't you write 13 as 15? Because you had written 23 as 25
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Re: The product of the five smallest two-digit prime numbers is closest to [#permalink] New post   11 Sep 2021, 19:21
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Certainly, you can and the answer will be similar, too.

Samamammadova8888 wrote:
Why don't you write 13 as 15? Because you had written 23 as 25
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Re: The product of the five smallest two-digit prime numbers is closest to [#permalink]
11 Sep 2021, 19:21
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