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Number

Quick questions on Factors, multiples and primes: HCF, LCM and prime factors - Edexcel GCSE Maths

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Write 126126 as a product of its prime factors in index form. [2 marks]
What is q2?
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Two lighthouses flash every 1212 seconds and every 1818 seconds. They flash together now. After how many seconds do they next flash together?

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