Answers

2015-07-07T20:17:50+08:00
A=( a, b, c, d, e )..........


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2015-07-07T21:51:14+08:00
Rooster:
A={1,3,5....}
B={2,4,6....}
C={-1,-2,-3...}
D={5,10,15...}
E={10,20,30...}
I dont have any example for set builder notation
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