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Continue to ChatGMAT DS : Number Properties : Even numbers https://gmat-prep-blog.wizako.com/gmat-quant-practice/arithmetic/gmat-ds-number-properties-even-numbers/
GMAT DS : Number Properties : Even numbers https://gmat-prep-blog.wizako.com/gmat-quant-practice/arithmetic/gmat-ds-number-properties-even-numbers/