6.1.1
P—|–Q–| ! ((P || Q) && (P && Q))
true|true | false
true|false| true
false|true| true
false|false| true
6.1.2
a. true
b. false
c. true
d. false
6.1.4
Grouping, Method Selector, Unary plus, Unary minus, Not, Multiplication, [...]
