Discussion Forum
Que.  If P, Q, R are Boolean variables, then (P + Q')(PQ' + PR)(P'R' + Q') simplifies 
a.  PQ' 
b.  PR' 
c.  PQ' + R 
d.  PR'' + Q 
Answer:PQ' 
Revathi :(March 26, 2019)
How the problem is solved .plz explain it

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Maneesha :(September 19, 2019)
Plz explain it

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Mithu :(October 18, 2021)
= (P + Q’)(PQ’ + PR)(P’R’ + Q’)
= (PPQ’ + PPR + PQ’Q’ + PQ’R) (P’R’ + Q’) = (PQ’ + PR + PQ’ + PQ’R) (P’R’ + Q’) = (PP’Q’R’ + PP’R’R + PP’Q’R’ + PP’Q’RR’ + PQ’Q’ + PQ’R + PQ’Q’ + PQ’Q’R) = (0 + 0 + 0 + 0 + PQ’ + PQ’R + PQ’ + PQ’R) = PQ’ + PQ’R = PQ'(1 + R) = PQ’ 
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