2025 YCKSS PRELIMS P1 Q18

2025 YCKSS PRELIMS P1 Q18

Secondary 4
3 marks

Written as prime factors, \(84=2^2\times3\times7\).

  1. Write 504 as a product of prime factors.[1]
  2. Two numbers greater than 100 have HCF 84 and LCM 504. Find the numbers.[2]

Solution:

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Answer:(i) \(2^3\times3^2\times7\) (ii) \(168\) and \(252\)

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