Which of the following is not a determiner?

• The number of (সংখ্যা) - এটি Determiner নয়।
- The number of obstacles is innumerable. 
এখানে number ই মূলত subject এর head-word.

• Very little (খুব অল্প পরিমাণ) - Uncountable noun কে determine করে। 
- There is very little water in the pond.

• A number of (কিছু সংখ্যক) - Countable noun কে determine করে।
- A number of people died of cholera every year. 

• Less (তুলনামূলক কম পরিমাণে) - Uncountable noun কে determine করে।
- It requires less attention.