1. Write
the duals of each of the following. [video]
(p∨q)∧r
t∨(p∧q)
(p∨q)∨r≡p∨(q∨r)
p∧[~q∨(p∧q)∨~r]
p∧(~q∨c)
(p∧t)∨(c∧~q)
2.
Write the dual statement of each of the following compound statements.
Manjiri and Hitendra cannot read Urdu.
Chetan has black hair and blue eyes.
Mark is a teacher or Erik is a doctor.
Yuvraj or Nirmala are going to School.