nho cong them 2 chu SQUARE ....
Hidden Content Nguyên văn bởi anot Hidden Content Hidden Content Nguyên văn bởi vic Hidden Content total=48 40 bác ơi. Hidden Content _http://math.stackexchange.com/questions/695591/how-many-squares-actually-are-in-this-picture-is-this-a-trick-question-with-no Very well illustration. Agree with 40
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cám ơn nhiều
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