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1. The product P of two prime numbers is between 9 and 55. If one of the prime numbers is greater than 2 but less than 6 and the other is greater than 13 but less than 25, then P =
- A. 15
- B. 15
- C. 15
- D. 15
Answer: Option D
Explanation:
Prime numbers greater than 2 but less than 6 = { 3 , 5 }
Prime numbers greater than 13 but less than 25 = { 17 , 19 , 23 }
Product P of two prime numbers between 9 and 55 is 51 ( i.e 3*17 )
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