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One example can disprove an always claim - Online practice 1

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

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Reasoning card. Claim to test: 'All prime numbers are odd.' Separately consider the sum of two even integers. A single valid counterexample disproves an 'always' claim, while several confirming examples do not establish a universal result. State the number domain used in a general argument.

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