RRB NTPC · Set Operations Practice

Exercise and reference answers

Matching pairs

1. Left

   Size of {a,b,c,d} ∩ {c,d,e}

   Right

   2

2. Left

   Size of {1,2,3,4,5} \ {4,5,6,7}

   Right

   3

3. Left

   Only A: |A|=48, |A∩B|=18

   Right

   30

4. Left

   Only Math in 35 Math, 15 both

   Right

   20

Instructions

Compute set differences and intersections