ANSWERS: 20
  • I am going with odd because it is half of five which is odd. Also when you divide an even number in half you get an even number. This is not the case here.
  • If the definition of even is that it must be evenly divided by 2 then it must be odd...since 2.5 divided by 2 has a remainder:)
  • Neither, 2.5 is not an integer and by definition only an integer can be odd or even.
  • niether, its not an integer, only integers can be odd or even.
  • The terms even and odd only apply to integers; 2.5 is neither even nor odd. You could call it a fraction, though, or you could call it George, or you could call it Irving. You just can't call it odd, or even.
  • Odd/even applies only to integers. By definition. I'm a mathematician. I know. :)
  • The division of two whole numbers does not necessarily result in a whole number. For example, 1 divided by 4 equals 1/4, which isn't even or odd, since the concepts even and odd apply only to integers. But when the quotient is an integer, it will be even if and only if the dividend has more factors of two than the divisor.
  • The terms "odd number" and "even number" apply only to integers. An "even number" is a number that is 2 times an integer. For instance, 14 is even because 14 equals 2 times 7, and 7 is an integer. An "odd number" is a number that is 1 plus an even number. For instance, 15 is a odd number because 15 is 1 plus 14, and we already know that 14 is an even number. You asked about the number 2.5; let's see about it. Is 2.5 an even number? 2.5 is 2 times 1.25, and 1.25 is not an integer. Therefore, 2.5 is not even. Is 2.5 an odd number? 2.5 is 1 plus 1.5, therefore 2.5 is odd if and only if 1.5 is even. So now the question is, is 1.5 even? 1.5 is 2 times 0.75, and 0.75 is not an integer. Therefore, 1.5 is not even, and from this we know that 2.5 is not odd. This goes to show that 2.5 is neither odd nor even.
  • Neither, you need an integer to determine odd or even values.
  • Only whole numbers can be odd or even.
  • it is fraction number
  • we can say only the integers as even or odd. I don't think than people say adecimal number as odd or even.If suppose the number is divided by 2 then we can say it as even.so i think 2.25 is an odd number.
  • 2.5 IS ODD because the unit is odd that means its odd
  • Evenness and oddness only applies to the integers. So we don't discuss whether 2.5 is even or odd; it just doesn't apply. It's neither.
  • You could say it's an odd multiple of 1/2 :)
  • "A formal definition of an odd number is that it is an integer of the form n = 2k + 1, where k is an integer. An even number has the form n = 2k where k is an integer." Source and further information: http://en.wikipedia.org/wiki/Even_and_odd_numbers In this sense, 2.5 is neither odd nor even. But this question is quite odd...
  • I think 2.5 is rather odd. :D
  • We know that 2.5 is not an integer, but a decimal number. And therefore, odd or even doesn't comply to decimals...... there fore, it isn't an odd or an even integer, but its just a decimal!

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