If the number of elements in set A is 20, in set B is 30, and the number of elements in the union of sets A and B is 40, what is the number of elements in the intersection of sets A & B:

Maths / Basic Math — Multiple-choice practice

  1. A. 10
  2. B. 5
  3. C. 15
  4. D. 20

Correct answer

10

Explanation

Explanation

Continue with Basic Math MCQs, explore all Maths topics, or try the Basic Math practice quiz.

More Basic Math questions

Found an error? Report a correction with this page URL and a supporting source.