The sum of distinct prime factors of 30 is_______.

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Solution

Prime factorisation of 30 = $2 \times 3 \times 5$
[1 mark]
All prime factors of 30 are distinct.
[0.5 marks]
So, the sum of distint prime factors of 30 = 2 + 3 + 5 = 10
[0.5 marks]

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