Pls 1. if [x-1/x]=5, then the value of [x2+1/x2] is [here~x2=xsquare
(a)25 (b)27 (c)29 (d)none of these

2.if{x-1/x}=5, then the value of {x4+1/x4} is
(a)725 (b)727 (c)729 (d)none of these

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}