1) 512(10)=1000000000(2)
2) 99(10)=1100011(2)
3) 315(10)=100111011(2)
4) 111011(2)=59(10)
5) 1111001(2)=121(10)
6) 1000111(2)=71(10)
7) 1204(10)=10010110100(2)
8) 586(10)=1001001010(2)
9) 915(10)=1110010011(2)
10) 10111101(2)=188(10)
11) 1111001(2)=121(10)
12) 1111101(2)=125(10)