9999 is the 4-digit number and 999 is the 3-digit number.
The digit with the second greatest value in the number is '1'. its value is second to the largest number which is 2.
The "7" digit had the greatest value because it is in the UNITS column.
01337
greatest two digit number is 99. smallest whole number is 0 there fore 99-0=99
It is 891.
99x9999=989901
9999 is the 4-digit number and 999 is the 3-digit number.
999999999999
-2
987654321
998.
9999
999,999,999,990
You will get the greatest product if you choose the greatest possible numbers in both cases, i.e., 9 x 99.
All nines 9,999,999,999
Highest 2-digit number = 99 Highest 1-digit number = 9 Highest possible sum from 2, 2-digit numbers = 198 Highest possible sum from 2, 1-digit numbers = 18