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Computer Science little troubles

Guest hotguy003
Guest hotguy003
in Computer Science

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the teachers give me this .... but think i lose way to determine in what base?

 

Although the first manned spaceship to land on Mars found no signs of current life, they did find the ruins of an ancient stone all with the following formula engraved on its face:

123 + 456 = 612

Assuming the individual characters all represent the same things as in out notation, how many digits (fingers and thumbs) should the Martians have ( on whatever they used for hands)? Explain how to arrived at your conclusion. HINT you need to deteermine in what base the formula make sense.

by looking at the numbers i can tell that it is in base 7. in relation to we humans and the number system that we use i would have to say that the martians have 7 digits.

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