PEN global
Problems in Elementary Number Theory 2 [ 2009 ] No. 1
Bangla | Tarik Adnan Moon |
Bosnian | Harun Šiljak |
Chinese | |
Croatian | Harun Šiljak |
English | TeX |
Greek | Silouanos Brazitikos |
Mongolian | Undrah Batzorig |
Romanian | Catalin Turcas |
Serbian [Latin] | Harun Šiljak |
Serbian [Cyrillic] | Harun Šiljak |
Vietnamese | Sơn Hồng Tạ |
Problems in Elementary Number Theory 1 [ 2008 ] No. 1
Bangla | Tarik Adnan Moon |
Bosnian | Harun Šiljak |
Chinese | Delong Meng |
Croatian | Harun Šiljak |
English | TeX |
Greek | Silouanos Brazitikos |
Mongolian | Undrah Batzorig |
Romanian | Catalin Turcas |
Serbian [Latin] | Harun Šiljak |
Serbian [Cyrillic] | Harun Šiljak |
Vietnamese | Sơn Hồng Tạ |
PEN global is the first step of the translations of PEN Problems Book.
If you want to contribute Project PEN by translating PEN Problems Book in your language, then please feel free to contact PEN Team at pen@problem-solving.be .
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Hello ! Please help me to solving this problem
find a , b , c , d , e if : abcde X 4 = edcba
21978 x 4 = 87912
abcde x 4 = edcba
Thanks you very much. see you later
Problem of The day
1/ know that:
12321=11 X 11 and 123021=351 X 351
Find M=abc…yz and N if 123M21= N X N
2/ Know that :
144 = 12 X 12 and 1444 = 38 X 38
Find n and P if : 1444…444 = P X P ( n=444….444 )
Good luck !