Clue | Length | Answer |
---|---|---|
tentative method | 5 letters | trial |
tentative method | 7 letters | r-and-d |
tentative method | 7 letters | testing |
tentative method | 13 letters | rule-of-thumb |
tentative method | 15 letters | trial-and-error |
tentative method | 24 letters | research-and-development |
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