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Define 'kid.' By middle school, at least, I could have done that even without the (10x + 3x) simplification. The real trick would be finding a three digit numb
by cgriswald 4y ago
Define 'kid.' By middle school, at least, I could have done that even without the (10x + 3x) simplification.
The real trick would be finding a three digit number that can be multiplied by 77 and still be a three digit number.
- olddustytrail 4y ago010
- cgriswald 4y agoThat's not a three-digit number. It's a three-digit representation of the two-digit number 10.
- olddustytrail 4y agoThat's not a two-digit number. It's a two-digit representation of the one-digit number A.
- cgriswald 4y agoWell, no, it's not. We're talking in the context of decimal representations of numbers. Outside of such a context the number of digits of a number is meaningless. In any case and in any base, a leading zero would not be considered a 'digit' of a given number, unless the character '0' was used to represent a non-zero digit.