7 JEE Main 2020 Sets and Relations previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the Sets and Relations chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Sets and Relations chapter hub.
A survey shows that 73 % of the persons working in an office like coffee, whereas 65 % like tea. If x denotes the perce…
Set A has m elements and set B has n elements. If the total number of subsets of A is 112 more than the total number of…
Let R 1 and R 2 be two relations defined as follows : R 1 = a ,   b ∈ R 2 : a 2 + b 2 ∈ Q and R 2 = a…
If R = x ,   y : x ,   y ∈ Z ,   x 2 + 3 y 2 ≤ 8 is a relation on the set of integers Z , th…
Let X = n ∈ N : 1 ≤ n ≤ 50 . If A = n ∈ X :   n  i s  a  m u l t i p l e…
A survey shows that 63 % of the people in a city read newspaper A whereas 76 % read news paper B . If x % of the people…
Let ∪ i = 1 50 X i = ∪ i = 1 n Y i = T , where each X i contains 10 elements and each Y i contains 5 elemen…