sat 数学题!!!
-3,-2,-1,0,1,2,3Howmanydistinctsumscanbeobtainedbyaddinganytwodifferentnumbersshownab...
-3,-2,-1,0,1,2,3
How many distinct sums can be obtained by adding any two different numbers shown above? 展开
How many distinct sums can be obtained by adding any two different numbers shown above? 展开
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