Please fill the blank with “+, - , x, ÷, ( )” for the equations below.
3 3 3 3 = 1 3 3 3 3 = 2 3 3 3 3 = 3
3 3 3 3 = 4 3 3 3 3 = 5 3 3 3 3 = 6
3 3 3 3 = 7 3 3 3 3 = 8 3 3 3 3 = 9
3 3 3 3 = 10
Answer for yesterday: The card on the table is the one with number 7.
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