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If A={1,2,3,....10} and B={2,4,6,...10} then A-B=?
Difficulty: Easy
A: 
{1,3,5,7,9}
B: 
{1,2,3,4,5,6,7,8,9,10}
C: 
[1,2.....10}
D: 
{2,4,6,8,10}
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