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1023 Have Fun with Numbers（20 分）Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with ... 阅读全文
posted @ 2018-08-30 20:32
氵丨
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1019 General Palindromic Number（20 分）A number that will be the same when it is written forwards or backwards is known as a Palindromic... 阅读全文
posted @ 2018-08-30 19:36
氵丨
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1015 Reversible Primes（20 分）A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. ... 阅读全文
posted @ 2018-08-30 18:56
氵丨
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