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Question
Question: Is n an even number? (1) n is divisible by 4. Sufficient?
Answer
ā **Sufficient!** If n is divisible by 4, then n = 4k for some integer k. 4k = 2(2k), which is always even. š” Divisible by 4 ā divisible by 2 ā even. Stronger conditions imply weaker ones.
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