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Number Vs integers

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Number Vs integers [#permalink] New post 08 Jul 2012, 02:11
Hi,

In D/S question stem sometimes we deal with variables that are sometimes numbers and sometimes integers. Integers can be both positive, negative or zero.

For numbers, I know for sure numbers can be zero or positive but can a number take a negative value.

Say x is a number can x be -0.2?
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Re: Number Vs integers [#permalink] New post 08 Jul 2012, 02:24
Expert's post
teal wrote:
Hi,

In D/S question stem sometimes we deal with variables that are sometimes numbers and sometimes integers. Integers can be both positive, negative or zero.

For numbers, I know for sure numbers can be zero or positive but can a number take a negative value.

Say x is a number can x be -0.2?


It seems that you need to brush up your fundamentals.

"x is a number ..." on the GMAT means that x is a real number. Real Numbers are integers, fractions and irrational numbers, so yes numbers can be negative. For example -2 is a negative number (negative integer).

For more check Number Theory chapter of Math Book: math-number-theory-88376.html

P.S. This is a general math question, so it should be posted in Main Math Forum, not in GMAT Club Tests subforum.
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Re: Number Vs integers   [#permalink] 08 Jul 2012, 02:24
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