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\u039c\u03b1\u03b8\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03bf\u03cd \u03a6\u03b5\u03c3\u03c4\u03b9\u03b2\u03ac\u03bb \u03ba\u03b1\u03b9 \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03b1 \u03c3\u03c4\u03bf\u03bd \u03c3\u03cd\u03bd\u03b4\u03b5\u03c3\u03bc\u03bf\u00a0<a href=\"https:\/\/sites.google.com\/view\/mathifest\/%CE%BC%CE%B1%CE%B8%CE%B7%CE%BC%CE%B1%CF%84%CE%B9%CE%BA%CE%AC-%CE%B4%CF%81%CF%8E%CE%BC%CE%B5%CE%BD%CE%B1?authuser=0\" target=\"_blank\" rel=\"noopener\">\u0395\u0394\u03a9<\/a><\/p>\n<p><strong>\u03a0\u03bf\u03b9\u03b5\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf\u03b9 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ad\u03c2 \u03c0\u03c1\u03bf\u03b4\u03b9\u03b1\u03b3\u03c1\u03b1\u03c6\u03ad\u03c2 \u03c4\u03c9\u03bd \u03b4\u03b9\u03b1\u03b3\u03c9\u03bd\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03c9\u03bd \u03ad\u03c1\u03b3\u03c9\u03bd;<\/strong><\/p>\n<p>\u03a4\u03bf \u03b2\u03af\u03bd\u03c4\u03b5\u03bf \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 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(\u03b5\u03bb\u03ac\u03c7\u03b9\u03c3\u03c4\u03b7 \u03b1\u03bd\u03ac\u03bb\u03c5\u03c3\u03b7 \u03c4\u03bf\u03c5\u03bb\u03ac\u03c7\u03b9\u03c3\u03c4\u03bf\u03bd 640\u00d7480)<\/li>\n<\/ul>\n<p>\u03a3\u03c4\u03bf \u03b2\u03af\u03bd\u03c4\u03b5\u03bf \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c0\u03b1\u03c1\u03bf\u03c5\u03c3\u03b9\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c4\u03b1\u00a0<strong>\u03bf\u03bd\u03cc\u03bc\u03b1\u03c4\u03b1 \u03c4\u03c9\u03bd \u03c3\u03c5\u03bc\u03bc\u03b5\u03c4\u03b5\u03c7\u03cc\u03bd\u03c4\u03c9\u03bd<\/strong> \u03ba\u03b1\u03b8\u03ce\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03cc\u03bd\u03bf\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03c3\u03c7\u03bf\u03bb\u03b5\u03af\u03bf\u03c5 \u03c3\u03c4\u03bf\u03c5\u03c2 \u03c4\u03af\u03c4\u03bb\u03bf\u03c5\u03c2 \u03b1\u03c1\u03c7\u03ae\u03c2 \u03ae \u03c4\u03ad\u03bb\u03bf\u03c5\u03c2. \u03a0\u03b9\u03bf \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03b1, 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