Example:

Example: This is John.
Method: Figure out which word is the name of a particular person, place or thing and select it.
Answer: John. John is the name of a particular person. Therefore, it is a proper noun.

Example: She is in my team.
Method: Figure out which word is a name given to a group of people, places or things and select it.
Answer: The noun in the above sentence is 'team'. Therefore, the answer is 'team'.

Example: 1, __ , 3, 4, 5; mean=3
Step 1: Let N be the missing number.
Step 2: We know, Mean = (Sum of all numbers)/(Number of numbers);
Therefore, Sum of all numbers = Mean x Number of numbers
→ 1 + N + 3 + 4 + 5 = 3 x 5 → N + 13 = 15 → N = 15-13 → N = 2

Example: What is the coefficient of 2y?
Answer: 2
Note: Numerical coefficient is the numeral part in a term.

Example: This is a tree.
Method: Figure out which word is a common name given to a person, place or thing and select it.
Answer: The noun in the above sentence is 'tree'. Therefore, the answer is 'tree'.