C-01-Q097mediummulti_combo_mcqConsider the following statements:If a set has 2n2n2n elements, the number of its subsets is 4n4^n4nQ={x:x=p/q, p∈Z, q∈Z+}\mathbb{Q} = \{x : x = p/q,\ p \in \mathbb{Z},\ q \in \mathbb{Z}^+\}Q={x:x=p/q, p∈Z, q∈ZFor a,b∈Ra, b \in \mathbb{R}a,b∈R, (a,b)={x∈R:a<x<b}(a, b) = \{x \in \mathbb{R} : a < x < b\}(a,b)={x∈R:aai and iibi and iiicii and iiidi, ii and iii