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Answer : 1 23 Explanation : Answer: A) 23 Explanation: The given number series 2, 19, 0, 21, –2, ? follows a pattern,22 17 = 1919 - 19 = 00 21 = 2121 - 23 = -2-2 25 = 23 Hence, the next number in the series is 23.

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