"consecutive numbers" vs "consecutive integer

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Till now i assumed that consecutive numbers are always integers. But check the following question I found on test magic.
Here is the question:

What the median of 7 consecutive numbers?

(1) arithmetic mean is 1 (2)total value of 7 numbers is INTEGER


Can .5,.6,.7 be consecutive? I think its only integers. So answer should be A.

However They say official answer is E. Not sure if this is correct answer.

Anybody ??
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by Stuart@KaplanGMAT » Tue Feb 19, 2008 9:23 pm
My first reaction is that this is a really bad question.

Technically, we need a modifier after 'consecutive' to know exactly what it means.

For example, we could have consecutive integers, consecutive even numbers, consecutive multiples of 4, ....

However, "numbers" with no other information usually means "integers". The explanation may say that numbers could mean any kind of number, but that's a really weak argument to make.

I have no clue who or what is behind Test Magic - the disadvantage of going with minor players is that you often get crappy questions.
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by rainbownlife » Tue Feb 19, 2008 9:35 pm
thanks for the response Stuart.
Test Magic is a mba prep/gmat forum. Found a link here to them. However i agree with you. Question definitely seems incomplete/incorrect. thanks.

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by suman2424 » Wed Feb 27, 2008 8:45 pm
rainbownlife wrote:Till now i assumed that consecutive numbers are always integers. But check the following question I found on test magic.
Here is the question:

What the median of 7 consecutive numbers?

(1) arithmetic mean is 1 (2)total value of 7 numbers is INTEGER


Can .5,.6,.7 be consecutive? I think its only integers. So answer should be A.

However They say official answer is E. Not sure if this is correct answer.

Anybody ??

Numbers does NOT mean integers. The consecutive numbers could be 1, 2, 3, 4, 5, 6, 7 or .3, .4, .5, .6, .7, .8, .9 or -10, -9, -8, etc you get the idea.

Statement 1) the mean = 1. since the mean is 1, and the # of numbers = 7, the sum of these numbers = 7.

Given that, the number set could be: -2, -1, 0, 1, 2, 3, 4. This would give us 7 consecutive numbers with a mean of 1.

However, according to this statement, the number set could also be: 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3. This also gives us 7 consecutive numbers with a mean of 1.

Since we dont have a definate answer, statement 1 is insufficent. (ruling out option A and D, leaving choices B, C or E.)

Statement 2) the total value of the 7 numbers is an integer.

All this tells us is that the sum of the 7 numbers is an integer. This alone doesn’t really tell us anything. So it is not sufficient. (Rule out B as an answer)

Statement 1 and 2) looking at them together, we know that the mean is 1, and the sum of the 7 numbers is an integer.

The number sets -2, -1, 0, 1, 2, 3, 4 and 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3 both satisfy these conditions, since the sum of both sets is = 7 (an integer) and the mean of both sets = 1.

Together, statement 1 and 2 are still insufficient.

The answer is E. I hope that helped!

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by rainbownlife » Fri Feb 29, 2008 2:49 pm
By definition consecutve nos ARE adjacent integers unless they are specified as odd consecutive nos or even consecutive nos and so on.....

I still think we need to go by the definition

people...any opinions ?