The chances of matching the first three digits in a lottery where the winning number's digits must be matched from left to right can be determined by dividing the number of ways to match the first three digits by the total number of winning number combinations.

Assuming that the lottery consists of five digits and that each digit can be any number from 0-9, the total number of winning number combinations would be 10^5 or 100,000.

To determine the number of ways to match the first three digits, we can fix the first three digits at a specific combination and vary the last two digits through all possible combinations. This gives us 10^2 or 100 possible ways to match the first three digits.

Therefore, the chances of matching the first three digits would be 100/100,000 or 0.001 or 0.1%.

Returning the response as a string: "The chances of matching the first three digits in a lottery where the winning number's digits must be matched from left to right are 0.1%."
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