'Few'/'a few' and 'little'/'a little'

1. 'Little' and 'a little' follow the same pattern 'as few' and 'a few'. The only difference is that we use 'few' and 'a few' with countable nouns in the plural form, and we use 'little' and 'a little' with uncountable nouns:
1. I have little money left in my account. ('money' is an uncountable noun)
2. She likes a few songs by Frank Sinatra. ('songs' is the plural form of the countable noun 'song')
2. There is a difference in the use of 'a little'/'a few' or 'little'/'few'. Without the article 'a', the words have a limiting or negative meaning.
1. I need a little money. (I need some money, a small amount)
2. I need little money. (I need hardly any money, a very small amount)
3. A few students passed the exam. (Some students passed the exam, for example 10 or 15)
4. Few students passed the exam. (Hardly any students passed the exam, for example 2 or 3)