represents the Boolean function
(A) X
(B) X+Y
(C) X xor Y
(D) Y
Answer: (A)
Explanation: The value of f(X, Y) is same as X for all input pairs.
Also sum of product form of expression we get,
= XY’+XY = X(Y’+Y) = X *1 = X
We see from truth table –
Column x = f(x,y) So , f(x,y)=x
Option (A) is correct.