Can you help with some of these congruences, so can get the idea. Thanks.
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For these problems, do you have to use discrete logarithms?
Actually I don't know, haven't heard of them.
Is that the only way to solve ?
This task was given as extra study, so maybe there should be those discrete logarithms...
I think it is worth noting that 25 and 49 are squares, while 27 and 125 are cubes.
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