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    • Question

      Let ‘p’ denote the number of primes from 1 to 30, and

      ‘q’ be the number of prime numbers in the range 31 to 50. What is the product p × q?
      A 90 Correct Answer Incorrect Answer
      B 84 Correct Answer Incorrect Answer
      C 42 Correct Answer Incorrect Answer
      D 50 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Prime numbers from 1 to 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 → Total = p = 10

      Prime numbers from 31 to 50: 31, 37, 41, 43, 47 → Total = q = 5

      p × q = 10 × 5 = 50

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