Is the number 2.5 odd or even?

Mz.MiMi · #1 29-06-2007, 16:45

Which do you use to tell odd or even, the ones place or the tenths place?

sushant · #2 29-06-2007, 16:55

This is just a real rational number. Nothing more can be said.

carspare · #3 29-06-2007, 17:05

Niether, this is called a real number

brokerstorage · #4 29-06-2007, 18:05

it is neither odd or even, this is a ritorecol question.

kpgkn29 · #5 29-06-2007, 18:15

The odd-even scheme is only used for integers and/or whole numbers. Therefore, 2.5 cannot be classified on either. But you always use the ones place when classifying.

Rangarajan R · #6 29-06-2007, 18:27

the number not odd or even number.

davebanner · #7 29-06-2007, 18:35

The number 2.5 is a rational number. By definition it cannot be considered neither odd nor even because it is not an integer, 1,2,3,4 etc...

Timothy H · #8 29-06-2007, 18:45

It's neither odd nor even. To be one of those, it would have to be an integer (with no decimal part). I always use the ones place to determine oddness or evenness, but *only* if the number in question is actually an integer.I guess if you HAD to choose between even and odd, you could say that the tenths place imparts some sort of "oddness" to the number, since the last digit is odd. But that logic doesn't hold up very well, because you could call it 2.50 and then say the last digit is even. You have to draw the line somewhere, and tradition tells us to draw the line at integers.I hope that helps.

en.wikipedia.org

jonsmarth · #9 29-06-2007, 18:55

Odd or even only applies to whole numbers.

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