2012 · Q99
If A = {x : x is an even natural number}, B = {x : x is a natural number and multiple of 5} and C = {x : x is a natural number and multiple of 10}, then what is A intersection (B union C) equal to?
Elementary MathematicsNumber System
- A{10, 20, 30, ...}
- B{5, 10, 15, 20, ...}
- C{2, 4, 6, ...}
- D{20, 40, 60, ...}
Explanation
B union C is the multiples of 5; intersecting with the even naturals gives the multiples of 10.