30 July 2022

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24 January 2021

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7 July 2020

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3 July 2020

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15 May 2020

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9 August 2018

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4 July 2013

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17 March 2012

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16 March 2012

• curprev 23:5923:59, 16 March 2012 Mngshan talk contribs 429 bytes +16 →Problem 5
• curprev 18:5018:50, 16 March 2012 NeilOnnsu talk contribs 413 bytes +413 Created page with "== Problem 5 == Let <math>B</math> be the set of all binary integers that can be written using exactly <math>5</math> zeros and <math>8</math> ones where leading zeros are allowe..."