Question

Select all of the following true statements if R = real numbers, I = integers, and W = {0, 1, 2, ...}.
a) W ⊂ I
b) R ⊂ W
c) 0 ∈ I
d) Ø ⊂ R
e) {0, 1, 2, ...} ⊆ W
f) -2 ∈ W