Mathematics · Reasoning
In the number 762354810, add to each digit the value equivalent to its position from the left (add 1 to the 1st digit, 2 to the 2nd digit, 3 to the 3rd digit, and so on). If any resulting number is a two-digit number, only take its unit digit. Then remove the repeated digits. What is the sum of the remaining unique digits in the final result?
- 135
- 230
- 328✓
- 415
Correct answer
28
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