<![CDATA[Module 5 Day 4 Challenge Part 1]]>https://forum.poshenloh.com/category/458RSS for NodeThu, 28 Jan 2021 11:14:02 GMTMon, 02 Nov 2020 22:15:53 GMT60<![CDATA[Something to Think About Day 4 in Number Theory( I think is the way to solve)]]>a 4-digit palindrome is a number reading the same front to back and back to front. For example, 1221. We can express a 4-digit palindrome as 1000x + 100y+10y+x= 1001x + 110y. finding a common factor we get. 11(91x+10y) 91 and 10 are coprime or relatively prime. Therefore our answer is 11. Also you could use the divisibility test for 11
]]>https://forum.poshenloh.com/topic/593/something-to-think-about-day-4-in-number-theory-i-think-is-the-way-to-solvehttps://forum.poshenloh.com/topic/593/something-to-think-about-day-4-in-number-theory-i-think-is-the-way-to-solveMon, 02 Nov 2020 22:15:53 GMT