Taking the 2's complement of a number twice gives—

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C-03-Q078In the 2's complement system, how do we decide whether a binary number is positive or negative?
C-03-Q079The 2's complement of the 4-bit number 1001 is—
C-03-Q080The 4-bit 2's complement representation of is—
C-03-Q081The 8-bit 2's complement representation of is—
C-03-Q082Using 2's complement to subtract from , the overflow (9th) bit in the result must be—
C-03-Q083Subtract from using the 2's complement method. The result is—
C-03-Q084Subtract from using the 2's complement method. The result is—
C-03-Q085Consider the following statements about 2's complement: Which of the following is correct?
C-03-Q086