(1+2) + 9 + (5+6) - (7+8) + (3+4); (3 + 9 + 11) - (15 + 7); (12 - 11) - 22; 23 - 22 = 1
6 for 3-digits, 6 for 2-digits, 3 for 1-digits, and 15 for all of the combinations
9*9*9 = 729 using the digits 1 to 9 and 2*9 using 10 and another digit. 749 in all.
3 * (2 - 1)
6
123,456 would be the smallest number using all 6 digits. You arrange the numbers from lowest to highest.
2 034 561 By:Philip Jayson L. Lestojas
By rearranging the digits the answer is 123.
25 digits
90 + (1 * 8) + (2 * 3) - 7 + 4 + 5 - 6
It is 415968.
90 + (1 * 8) + (2 * 3) - 7 + 4 + 5 - 6
(2*4)-(1*8) = 0