The 'representation' of a number is, how you write it. Usually, these days, you write out a number with decimal digits, 0-9, but there's other ways. Six, you can write it these ways:
6 (in decimal, arabic numerals)
six (english word)
VI (roman numerals)
X X X X X X
sechs (german word)
110 (in binary)
20 (in base 3)
sqrt(25)+1 (a mathematical expression)
Integers are whole numbers, positive and negative and zero. Odd integers, when you write them in decimal, all end with an odd digit 1 3 5 7 9. examples:
1
47
-3
(If you write them in a base that's odd, it's more complicated.)
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The next odd integer after 40 is 41
The number 71 is an integer, an odd integer, a positive odd integer, and also a prime number.
let x = any integer then (2x + 1) = any odd integer
17 (odd integer) + 19 (odd integer) = 36 17 and 19 are consecutive odd integers.
If n is an odd integer then the next two consecutive odd integers are n+2 and n+4.