2.237 numbers as pronouns

When either the context makes it clear, or you think that your listener already knows something, you can use the cardinal number without the noun group.

• These two are quite different.

When cardinal numbers are used like this, you can put ordinal numbers or superlative adjectives in between the determiner and the cardinal number.

• I want to tell you about the programmes. The first four are devoted to universities.
• The other six are masterpieces.
• The best thirty have the potential to be successful journalists.