If the most significant bit of a signed binary number is $1,$ that number is:

A$-$ positive.

B$-$ in hexadecimal format.

C$-$negative.

incorrect.

True or False? Signed magnitude and two's complement both have two representations for zero.

Using the $2\text{'}$s complement method execute in binary the following operations, produce the result

and decimal

$-61+19$

$45-22$

$61-10$

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