answers can be multi choice

1) Logic gates:

a) compute the result only for such expressions which are always true regardless of variable values

b) occur in the processor

c)can take the result of another logic gate as an input

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2) An arbitrary positive integer:

a) has a uniquely defined representation in the octal system

b) has the same representation in the sign-magnitude convention and in the two's complement convention (assuming that it fits into a processor register)

c)will fit into one register of a 32-bit processor

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3) Which of the following sentences are correct?

a)given just the representation of a number in a positional system, one can determine which base was used

b) a number which ends with 0 in base k system must be divisible by k

c) every Boolean expression evaluates to 1 for at least one combination of input values