$20
Section 1.1
#6, #14,
Section 1.3
#14
#20 , for this one, prove the equivalence by first taking the DNF of ~(p XOR q) and show using equivalence laws that it is equivalent to p <--> q
Section 1.5 #48
Section 1.6 #12, #28
Section 1.7 #32
Section 1.8 #8, #16
Section 2.1 #10
Section 2.2 #18
Section 2.3
#12, #72