The number 76 has 6 in the one's digit column, and 7 in the tens' digit column, as shown in the figure.
Explanation:
In the decimal numbering system, we count from 0,1,2, ..., 9 in the ones digit column.
When we reach 10, we have exhausted all 10 positions in the ones column. Therefore we shift left into the tens digit column and count in tens as 10,20,30, ..., 90.
When we reach 100, we have exhausted the 10 positions in the tens column. So we shift left and count in hundreds, and so on.
