To find out if 643 is an odd number, we divided 643 by two. When we did this, we found that the answer
is not a whole number.
If you divide any number, such as 643, by two and you don't get a whole number,
it means that the number is an odd number.
643 divided by two is not a whole number. Thus, 643 is an odd number and the answer
to the question "Is 643 an odd number?" is YES.
Is 644 an odd number?
Can you use the information on this page to figure out if the next number on our list is odd? Check your answer here!
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