Solution 2.1 -《Sets, Functions, and Logic》

(1)
(a). $0<\pi <10$
(b). $3<4$
(c). $-3<e<3$
(d). $\pi >0$
(e). $\pi \ne 0$

(2)
(a). T
(b). T
(c). T
(d). F
(e). F
(f). F
(g). T
(h). T
(i). T
(j). T