Hoy que es 8 del 8 les propongo las siguientes operaciones que usan números que tienen solo sietes, ochos y nueves
877 x 887 = 777899
8777 x 8987 =78878899
87777 x 89987= 7898788899
877777 x 899987= 789987888899
8777777 x 8999987= 78999878888899
87777777 x 89999987= 7899998788888899
877777777 x 899999987= 789999987888888899
8777777777 x 8999999987= 78999999878888888899
8887×8877 = 78889899
9887×7877 = 77879899
7887×9877 = 77899899
8987×8777 = 78878899
88887 × 98877 = 8788879899
98887 × 88877 = 8788779899
89887 × 87877 = 7898999899
99887 × 77877 = 7778899899
87887 × 99877 = 8777889899
97887 × 89877 = 8797789899
88987 × 88777 = 7899998899
98987 × 78777 = 7797898899
89987 × 87777 = 7898788899
888887 x 998877 = 887888779899
8888887 x 9998877 = 88878887779899
88888887 x 99998877 = 8888788877779899
888888887 x 999998877 = 888887888777779899
8888888887 x 9999998877 = 88888878887777779899
8777 x 8987 =78878899
87777 x 89987= 7898788899
877777 x 899987= 789987888899
8777777 x 8999987= 78999878888899
87777777 x 89999987= 7899998788888899
877777777 x 899999987= 789999987888888899
8777777777 x 8999999987= 78999999878888888899
8887×8877 = 78889899
9887×7877 = 77879899
7887×9877 = 77899899
8987×8777 = 78878899
88887 × 98877 = 8788879899
98887 × 88877 = 8788779899
89887 × 87877 = 7898999899
99887 × 77877 = 7778899899
87887 × 99877 = 8777889899
97887 × 89877 = 8797789899
88987 × 88777 = 7899998899
98987 × 78777 = 7797898899
89987 × 87777 = 7898788899
888887 x 998877 = 887888779899
8888887 x 9998877 = 88878887779899
88888887 x 99998877 = 8888788877779899
888888887 x 999998877 = 888887888777779899
8888888887 x 9999998877 = 88888878887777779899
88888888887 x 99999998877 = 8888888788877777779899
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