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Question
The number of teeth and the age of a person vary ______
Options
directly with each other.
inversely with each other.
neither directly nor inversely with each other.
sometimes directly and sometimes inversely with each other.
Solution
The number of teeth and the age of a person vary sometimes directly and sometimes inversely with each other.
Explanation:
The number of teeth and the age of a person vary sometimes directly and sometimes inversely with each other, we cannot predict about the number of teeth with exactly the age of a person. It change with person-to-person.
Hence, sometimes directly and sometimes inversely with each other.
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