The number 9 is the greatest one-digit number.
1
The digit (not didgit) 1.
1.
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1,000
The greatest 3-digit number is 999. 9+9+9 = 27 The sum of the greatest 3-digit number is 27.
Since the greatest digit is 9 and the greatest 2-digit number is 99, the product of them is 891.
2 digit number
It is 891.
The digit (not didgit) 1.
The digit with the second greatest value in the number is '1'. its value is second to the largest number which is 2.
It is: 8
The greatest six-digit number is 199,999.
0
1
Greatest 2 digit positive number is 99 and adding 1 to it will yield 99 + 1 = 100
99 x 9 = 891.
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