Pick a 3‑digit number where the first and last digits differ by at least 2. Reverse it, subtract the smaller from the larger, reverse the result, then add. You'll land on 1089!
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Enter a number like 532 or tap Random
Speed:0.90s
Rule: 100–999, and |hundreds − ones| ≥ 2. Not valid? Tap “Make Valid”.
Ready
0/4
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