In the number system with some base, the decimal number 99 is written as 120. What is the base?
| December 12, 2020 | education
If from the number 99 we got 120, then the remainders when dividing 99 by the base cc are 0, 2 and 1, respectively.
We can get 0 when dividing 99 only if we divide by 3 or 9.
3 does not fit.
Answer: 9.
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