SAT Math Question of the Day

Math Category: Algebraic Sets:

Q: What is the intersection of Set A = {2,4,5,8,9} and Set B = {4,5,6,7,9}?

  1. {2,4,5,7,8,9}
  2. {0,1,3}
  3. {4,5,9}
  4. {2,6,7,8}
  5. {2,4,6,8}

UNANSWERED.

The correct answer is C.

A: The answer is {4,5,9}. To find the intersection of 2 sets, you look for what elements are in both sets. Since 4, 5, and 9 are the only elements that are in both Set A and Set B, that is the intersection.