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​Q21: Question – Paper 2 – June 2018
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Question
21)
a) Find the lowest common multiple (LCM) of 40 and 56 
[2 marks]
​

A = 23 x 3 x 5             B = 22 x 3 x 52

 

b) Write down the highest common factor (HCF) of A and B.

[1 mark]