Question: Which statement is not correct about adders? a . X Y 1 is computed by X + Y b . 2 X can be computed

Which statement is not correct about adders?
a. X Y 1 is computed by X + Y
b.2X can be computed by X + X .
c. The propagated and generated carries in the look-ahead carry adder are created
from the two data inputs and the carry-in bit at LSB.
d. If all the carry-in bits are zeros, then X + Y = X Y , where is an exclusive-OR
operator.

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