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**Question**

23)

Two consecutive whole numbers are

a) Simplify

Two consecutive whole numbers are

*n*and*n*+ 1a) Simplify

*n*– (*n*+ 1)**[1 mark]**

b) Multiply out

*n*(

*n*+ 1)

**[1 mark]**

c) The two numbers are added.

Show that the answer must be an odd number.

**[3 marks]**