If p = {prime factors of 210} and Q = {prime less than 10}, find
MATHEMATICS
WAEC 2012
If p = {prime factors of 210} and Q = {prime less than 10}, find p ∩ Q
- A. {1,2, 3}
- B. {2, 3, 5}
- C. {1, 3, 5,7}
- D. {2,3,5,7}
Correct Answer: D. {2,3,5,7}
Explanation
prime factor of 210 = 2, 3, 5, 7
prime numbers less than 10 = 2, 3, 5 , 7
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