**Helpful Links**Question**

4)

a) Write down each of the following.

(i) An even number.

a) Write down each of the following.

(i) An even number.

**[1 mark]**

(ii) A factor of 25.

**[1 mark]**

(iii) A prime number between 10 and 20.

**[1 mark]**

(iv) A cube number

**[1 mark]**

b) Find the highest common factor (HCF) of 35 and 91.

**[2 marks]**