2025 AHS PRELIMS P1 Q6

2025 AHS PRELIMS P1 Q6

Secondary 4
4 marks
  1. Express \(2250\) as the product of its prime factors.[1]
  2. The number \(\dfrac{2250h}{k}\), where \(h\) and \(k\) are integers, is a perfect cube. Find the smallest positive integer value of \(h\) and of \(k\).[1]
  3. Find two smallest possible integers, one is odd and the other is even, such that they have a lowest common multiple of \(2250\) and a highest common factor of \(45\).[2]

Solution:

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Answer:(a) \(2\times3^2\times5^3\) (b) \(h=3,k=2\) (c) \(90,1125\)

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