Question

What is proposition? Explain whether,x-y less then 5 is a proposition or not

Answer 1

A proposition is a predicate or an expression which has only two values : True or false.

x - y  >  5 

We need to substitute the values of x and y in the preposition.

If the value of arithmetic expression  (x - y) is  more than 5 then  the preposition is True.  

Otherwise, if the value of (x - y) is less than or equal to 5  then the preposition is false.

Hence, x - y  > 5  is not predicate or a preposition.

Answer 2

A preposition is usually placed before noun or pronoun to show its relation to some other words.