42 x 9 or 63 x 6
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Answer1 x 9 (number of 1 digit numbers) plus 2 x 89 (number of 2 digit numbers) plus 3(number of 3 digit numbers) x 347 = 1228 The correct answer is 1323. Here is how you do it.1 digit numbers = 92 digit numbers = 90 (99-9) number of 2 digit numbers - number of 1 digit numbers3 digit numbers = 378 (477-99) number of 3 digit numbers - number of 1 & 2 digit numbersSo, the solution is:1x9 = 92x90 = 1803x378 = 11349+180+378 = 1323
999,999 is 6 digits Adding 1 makes it 1,000,000 = a 7 digit number.
Easily put any number with a single odd number 1,3,5,7,9 in a three digit number. Like 113 the 3 and 1 makes it odd number or 223 the three makes it odd.
2 digit number
I would think the greatest 7 digit number would be 9,999,999. Therefore if you add 1 more, you would get 10,000,000. Makes sense to me anyway, lol.