How many types of adjectives in the following

1. The old car travelled slowly on these dangerous roads

There are three different types of adjectives in the given sentence:

1. Descriptive adjective: "old" describes the age of the car.
2. Qualitative adjective: "dangerous" describes the quality of the roads.
3. Demonstrative adjective: "these" indicates which particular roads are being referred to.

In the given sentence, there are two types of adjectives used:

1. Descriptive adjective: "old" describes the age of the car.
2. Qualitative adjective: "dangerous" describes the quality of the roads.

To determine the number of types of adjectives in the given sentence, we need to identify all the adjectives present. Adjectives are words that describe or modify nouns or pronouns.

In the given sentence, we have two adjectives:

1. "old" - This adjective is describing the noun "car" by indicating its age.
2. "dangerous" - This adjective is describing the noun "roads" by indicating their characteristic of being risky or unsafe.

Therefore, there are two types of adjectives in the given sentence.