2025 PHS PRELIMS P1 Q4

2025 PHS PRELIMS P1 Q4

Secondary 4
4 marks
  1. Express 504 as a product of prime factors.[1]
  2. Find the smallest positive integer \(k\) such that \(\sqrt[3]{504k}\) is an integer.[1]
  3. The HCF of two numbers is 84 and their LCM is 504. Both numbers exceed 100. Find the two numbers.[2]

Solution:

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Answer:(a) \(2^3\times3^2\times7\) (b) \(147\) (c) \(168,252\)

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