+157
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+1741
+1741
+1348
+1741 Dec 22, 2023
+1741
+1776
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+27
+1940
+27
+1940
+1940 In Ms. Q's deck of cards, every card is one of four colors (red, green, blue, and yellow), and is labeled with one of seven numbers ($1,$ $2,$ $3,$ $4,$ $5,$ $6,$ and $7$). Among all the cards of each color, there is exactly one card labeled with each number.
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+27
+1940