Question 4

The number of teeth and the age of a person vary
(a) directly with each other
(b) inversely with each other
(c) neither directly nor inversely with each other
(d) sometimes directly and sometimes inversely with each other

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Solution

The number of teeth and the age of a person vary somtimes directly and sometimes inversely with each other, we cannot predict about the number of teeth exactly with the age of the person.
Hence, option (d) is correct.

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Question 4 The number of teeth and the age of a person vary (a) directly with each other (b) inversely with each other (c) neither directly nor inversely with each other (d) sometimes directly and sometimes inversely with each other

The number of teeth and the age of a person vary somtimes directly and sometimes inversely with each other, we cannot predict about the number of teeth exactly with the age of the person. Hence, option (d) is correct.

Question 4

The number of teeth and the age of a person vary
(a) directly with each other
(b) inversely with each other
(c) neither directly nor inversely with each other
(d) sometimes directly and sometimes inversely with each other

The number of teeth and the age of a person vary somtimes directly and sometimes inversely with each other, we cannot predict about the number of teeth exactly with the age of the person.
Hence, option (d) is correct.