RU-ALLRUSSIAN 1964 Problem 14
- Answer
a) Find the smallest square with last digit not 0 which becomes another square (not zero) by the deletion of its last two digits. #(b) Find all squares, not containing the digits 0 or 5, such that if the second digit is deleted the resulting number divides the original one.
Dataset text NuminaMath olympiads. Quoted with source.
Show the answer
121, 16, 36, 121, 484
Solutions
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