Answer:
The sum is 127
Step-by-step explanation:
The first 9 numbers have just one digit, so we have:
1+2+3+4+5+6+7+8+9 = 45
Then, for the numbers from 10 to 19, we have:
1+2+3+4+5+6+7+8+9+10 = 45 + 10 = 55
Finally, for the numbers from 20 to 25, we have:
2+3+4+5+6+7 = 27
So the total sum of digits is:
45 + 55 + 27 = 127
