What is the value of 99 × 99 + 199?

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• A 9801
• B 9999
• C 10000
• D 10199

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Answer: C. 10000

199 = 2 × 99 + 1, so 99² + 2 × 99 + 1 = (99 + 1)² = 100² = 10000.

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