Great fan of the Manhattan free prep hour! Really good to actually approach gmat quant with examples step by step. I also post some gmat practice examples and solutions if some one is looking for extra practice.
Arun - while you are right 0 is neither positive nor negative, it comes under the category of “non-negative” (everything including zero thats not negative). Does that help answer your question?
@@AceMBAAdmits it does answer the question. I get this is a bit semantic at this point, but if every number that is non-negative is positive and 0 is not positive, 0 should not be included since it is not positive.
@@arunchadda1953 every non-negative number is not positive that would be an incorrect assumption to start with. This is a common trap in GMAT. “Non-negative and “positive” are not the same set. Positive set is {1, 2, 3 ….}, non-negative set is {0,1,2,3 …}. Similarly every non-positive number is not negative. Non-positives will also start with 0.
GMAT by Examples is correct. Saying "non-negative" is not the same as saying "positive." If zero is NOT negative, then it is non-negative by definition. Language like this is important on the GMAT and missing the details can result in missing critical cases. Our brains nearly always default to assuming that numbers are positive integers, so we forget about positive non-integers (fractions, decimals), negative integers, negative non-integers (fractions, decimals), and especially the number ZERO.
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Thanks Manhattan Prep and Tiffany !
Great fan of the Manhattan free prep hour! Really good to actually approach gmat quant with examples step by step. I also post some gmat practice examples and solutions if some one is looking for extra practice.
I'm glad that you're enjoying the sessions!
In the warm up for the 6 smallest non-negative even numbers, y'all included 0. I thought 0 was neither positive nor negative.
Arun - while you are right 0 is neither positive nor negative, it comes under the category of “non-negative” (everything including zero thats not negative). Does that help answer your question?
@@AceMBAAdmits it does answer the question. I get this is a bit semantic at this point, but if every number that is non-negative is positive and 0 is not positive, 0 should not be included since it is not positive.
@@arunchadda1953 every non-negative number is not positive that would be an incorrect assumption to start with. This is a common trap in GMAT. “Non-negative and “positive” are not the same set. Positive set is {1, 2, 3 ….}, non-negative set is {0,1,2,3 …}. Similarly every non-positive number is not negative. Non-positives will also start with 0.
GMAT by Examples is correct. Saying "non-negative" is not the same as saying "positive." If zero is NOT negative, then it is non-negative by definition. Language like this is important on the GMAT and missing the details can result in missing critical cases.
Our brains nearly always default to assuming that numbers are positive integers, so we forget about positive non-integers (fractions, decimals), negative integers, negative non-integers (fractions, decimals), and especially the number ZERO.