Consider the two cascaded 2-to-1 multiplexers as shown in the figure.

The minimal sum of products form of the output X is [GATE||2016||SET1||MCQ||2MARKS]
P'Q' + PQR
P'Q + QR
PQ + P'Q'R
Q'R' + PQR
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GATE || DIGITAL ELECTRONICS / LOGIC ||PYQ (2010 TO2025),GATE || DIGITAL LOGIC || COMBINATIONAL CIRCUIT || PYQ (2010 TO 2025 )