2 votes 2 votes Let s(w) denote the set of all the letters in w where w is an English word. Let us denote set equality, subset and union relations by =, ⊂ and ⋃ respectively. Which of the following is NOT true? (a) s(ten) ⊂ s(twenty) (b) s(stored) = s(sorted) (c) s(sixty) ⊂ (s(six) ⋃ s(twenty) (d) None of these Answer Given is (d) how? Set Theory & Algebra set-theory&algebra + – Prasanna asked Nov 27, 2015 Prasanna 788 views answer comment Share Follow See 1 comment See all 1 1 comment reply Umang Raman commented Nov 27, 2015 reply Follow Share {t,e,n} ⊂ { t,w,e,n,t,y} similarly all 3 are true so D is the answer. 2 votes 2 votes Please log in or register to add a comment.
Best answer 3 votes 3 votes (a) { t, e, n } ⊂ { t, w, e, n, t, y } //TRUE (b) { s, t, o, r, e, d } = { s, o, r, t, e, d } //TRUE (c) { s, i, x, t, y } ⊂ { s, i, x, t, w, e, n, t, y } //TRUE All are true.. Digvijay Pandey answered Nov 27, 2015 • selected Nov 27, 2015 by Arjun Digvijay Pandey comment Share Follow See all 0 reply Please log in or register to add a comment.