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Verified answer
Logikap =(b)
q= (b)
dan ~ (p→ r) = (b) maka p→ r = s
krn p= (b) maka r = (s)
kesimpulan
p = (b)
q = (b)
r = (s)
a. ~ p → r = (s) → (s) ≡ (benar)
b. q → ~p = (b) → (s) ≡ (salah)
c. r ∨ ~p = (s) ∨(s) ≡ (salah)
d. ~r → ~p = (b) → (s) ≡ (salah)
e. (p∧ ~ r) ↔ (r ∨q)
= (b) ↔ (b) ≡ (benar)
jawb D