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Question

statement patterns
(i) [(pq)q]p
(ii) (pq)p
(iii) (pq)(pq)
(iv) (pr)(qp)

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Solution

Statements:

(1) [(pq)q]p if [(if p then q) and q] then p
Truth table
p q pq [(pq)q] [(pq)q]p
T T T T T
T F F F T
F T T T F
F F T F T

(2) (pq)p if(p and q) then (not p)
Truth table
p q pq p (pq)p
T T T F F
T F F F T
F T F T T
F F F T T

(3) (pq)(pq) (if p then q) implies(not p or q)
(not p or q) implies (if p then q)
Truth table
p q p pq (pq) (pq)(pq)
T T F T T T
T F F F F T
F T T T T T
F F T T T T

(4) (pq)(qp)pq and qp are same
Truth table
p q pq qp (pq)(qp)
T T T T T
T F F F F
F T F F F
F F T T T

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