Question

What is exact definition of consecutive numbers . Explain ?​

Answer 1

any two numbers of the form

n, n+1 (where n belongs to Integers)

are said to be consecutive numbers.

Answer 2

Consecutive integers are integer and next integer

if x is an integer then x and x + 1 are two consecutive integers

and x ,x+1,x+2 are 3 consecutive integers

5,6,7,8 are example of 4 consecutive integers