if x is the addition of the prime numbers between 1 and 6; and y the H.C.F. of 6, 9, 15. Find the product of x and y

  • A 27
  • B 30
  • C 33
  • D 90
jamb 1988mathematics

The correct answer is B. 30

The prime numbers between \(1\) and \(6\) are \(2, 3, 5\). Add these numbers:

\(x = 2 + 3 + 5 = 10\).

The highest common factor (H.C.F.) of \(6, 9, 15\) is \(3\).

The product of \(x\) and \(y\) is \(10 \times 3 = 30\).

Therefore, the product of \(x\) and \(y\) is \(30\)

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