Question: 1 . A proof is a step - by - step . ( Write one word; two possible correct answers. ) 2 . Informal proofs

1. A proof is a step-by-step .(Write one word; two possible correct answers.)
2. Informal proofs in this class are written in which language?
3. Formal proofs that we will soon learn are written in which language?
4. Informal proofs should start with the word and end with the word .
5. In a good proof, every step is and .

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