What is `(1111)_(2)+(1001)_(2)-(1010)_(2)` equal to ?

What is (1000000001)_(2)-(0.0101)_(2) equal to ?

What is (1001)_(2) equal to ?

What is (1001)_(2) equal to?

What is i^(100)+i^(1001)+i^(1002)+i^(1003) equal to (where i=sqrt(-1)) ?

What is the value of ((1001)_(2)^((11)_(2))-(101)_(2)^((11)_(2)))/((1001)_(2)^((10)_(2))+(1001)_(2)^((01)_(2))(101)_(2)^((01)_(2))+(101)_(2)^((10)_(2)))?

Subtraction: (1100.101)_(2)-(1001.11)_(2)

Addition: (1100.101)_(2) + (1001.11)_(2) + (11.01)_(2)

Addition : (1.111)_(2) + (11.11)_(2) + (111.1)_(2) + (1111)_(2)