Example: There are two bananas and an apple.
Method: Plural means one. Select the noun which is more than one in quantity.
Answer: In the above sentence, the noun bananas is plural as there is more than one. Therefore, the answer is 'bananas'.

Example: There are two bananas and an apple.
Method: Singular means one. Select the noun which is only one in quantity.
Answer: In the above sentence, bananas and apple are nouns but there is only one apple. Therefore, the answer is 'apple'.

Example:

Example: cat