Binary and Denary

Convert 01001011 to Denary
75
85
65
Convert 87 to Binary
01010110
01010111
01010101
10101110
Convert 721 to binary
01011010001
1011010010
1011010001
1111110001
What is 854- 10110
584
600
986
What is 1001010110011 in Denary
1220825
1210827
1220829
1220827
What is 1001010110011+100000283 No calculators allowed
1001221111
101221110
1101021111
111230129
What is 876- 00100101
76.5
37
36
32
897-01111111
196
622
69
45
127 in Binary
100000000
01111111
111010111
Whats 2+1
3
4
12
2
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