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:
13 is a number.
composite
prime
Example:
cat
cats
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