Which of the following statements are true or false? Give reasons for your answer.

i) 'Today is a bright day' is an unambiguous statement.

ii) The sum of the interior angles of a Pentagon is 450°.

iii) Pre-operational thinking is the characteristic of a two year old child.

iv) If the capacity of a 3D-objects increases, then the volume also increases.

Each mathematical problem have a unique solution.

i) False – The statement "Today is a bright day" is subjective and depends on individual perception or environmental factors. It lacks precision, as "bright" can mean different things to different people, making it ambiguous.

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