Saved Bookmarks
| 1. |
Are the following pairs of sets equal? Give reasons.(i) A = {2, 3}, B = {x : x is solution of x2 + 5x + 6 = 0}.(ii) A = {x : x is a letter in the word FOLLOW}. B = {y: y is a letter in the word WOLF}. |
|
Answer» (i) x2 + 5x + 6 = 0 ⇒ (x + 3)(x + 2) = 0 ∴ x = -3,-2 ∴ B = {-3, -2}- But A = {2, 3} ∴ A ≠ B (ii) Given sets are A = {F, O, L, W} B = {W,0,L,F} ∴ A = B ∵ A and B have same elements. |
|