Car salesman records information about the cars he is selling, using data types like qualitative, continuous, and discrete.

Let's solve each part of the problem by understanding what type of data each piece of information represents.

We are given three types of data to choose from:

- Qualitative: Describes qualities or characteristics (e.g., color, brand, type). It is not numerical.
- Continuous: Numerical data that can take any value within a range (e.g., height, weight, age — measured in decimals).
- Discrete: Numerical data that can only take specific, separate values (e.g., number of doors, number of passengers).

Now let’s analyze each sentence:

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(a) The number of doors is ................. data.

- The number of doors is a countable number (e.g., 2 doors, 4 doors).
- It cannot be 2.5 doors — it must be a whole number.
- So this is discrete data.

✔ Answer: Discrete

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(b) The age of each car is ................. data.

- Age can be measured in years, months, days, etc.
- For example, a car could be 3.5 years old, or 2.75 years old.
- Since age can take any value within a range (including decimals), it is continuous data.

✔ Answer: Continuous

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(c) The colour of the car is ................. data.

- Colour is a descriptive attribute (e.g., red, blue, black).
- It is not numerical and describes a quality.
- This is qualitative data.

✔ Answer: Qualitative

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Final Answers:

(a) The number of doors is discrete data.
(b) The age of each car is continuous data.
(c) The colour of the car is qualitative data.

✔️ All answers use words from the provided list and correctly classify the data types.