Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2017MathematicsSets and Relations

If A= x: x²-x+2>0 and B= x: x²-4 x+3 0 , then A B is

Options

  1. A[1,3]
  2. B(- , )
  3. C(1,3)
  4. D(- , 1) (3, )

Correct answer

A. [1,3]

Step-by-step solution

Here, A= x: x²-x+2>0 =R ( array l x²-x+2=x²-x+ 1 4 + 7 4 = (x- 1 2 )²+ 7 4 7 4 array ) and B= x: x²-4 x+3 0 = x:(x-1)(x-3) 0)=[1,3] Hence, A B=R [1,3]=[1,3]

Practice Sets and Relations on Quantrex Academy →

More from Sets and Relations

Let A and B be two subsets of = 1, 2, 3, -------, 44, 45 such that A = x: x is divisible by 3 and 4 B = x: x is a perfect square number Then n(B - A) equals 2026Given the sets A = 1,2,3 ; B = 2,3,5 and C = 4,5,6 identify Which of the following statements is incorrect . 2026If A = x : x is the first three odd numbers B = 2x + 3 : 0 x true 2026The set expression A (B (A' B')) is equivalent to 2026Let C be the set of all the circles in a plane. If R = (C₁, C₂) C C C₁ and C₂ intersect , then which of the following statements is TRUE? 2026If A = a, b, c, d, e, f , then the number of subsets of A which contains at least 2 elements is 2026If A = 1, 2, 3, 4, , 10 , then the number of non-empty subsets of A containing only even number is 2026If n(A) = 2 and the number of relations from set A to set B is 1024 , then n(B) is 2026 Full Sets and Relations list All COMEDK PYQs