Question 37
SetsIf P = {prime factors of 210} and Q = {prime numbers less than 10}, find P∩Q.
- A.{1, 2, 3}
- B.{2, 3, 5}
- C.{1, 3, 5, 7}
- D.{2, 3, 5, 7}
Show the answer and explanation
Answer: D ({2, 3, 5, 7})
Explanation
210 = 2 × 3 × 5 × 7, so P = {2, 3, 5, 7} = Q, and P∩Q = {2, 3, 5, 7}.