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For a set of integers, A is the arithmetic mean and S is the

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AJB77
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For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 18:30
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For a set of integers, A is the arithmetic mean and S is the the sum of the terms. A is what percent of S?

S1) Number of terms in set is 9

S2) Sum of the terms is 100



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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 18:34
quick ans "A"...

we know A = S/N (N - no of terms)....if we know A/N then we know the ans.....first stem gives that, "B" doesn't say anything.
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 19:26
A.
statement i is sufficient. A/S=1/9
statement ii says s=100. so insuff.
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 20:05
Agree with A, the explanations above are perfect.
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 20:10
OA is C.

S1 alone is insufficient because the sum can be zero and 0/0 is undefined. We need to know therefore that the sum is nonzero.
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 20:22
Yup forgot that possibility....Man all the practice down the drain..
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 20:42
AJB77 wrote:
OA is C. S1 alone is insufficient because the sum can be zero and 0/0 is undefined. We need to know therefore that the sum is nonzero.


agreed. simple but blunder. :twisted:
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   29 Jul 2005, 21:21
AJB77 wrote:
OA is C.

S1 alone is insufficient because the sum can be zero and 0/0 is undefined. We need to know therefore that the sum is nonzero.



:lol: out of touch !
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   30 Jul 2005, 03:59
banerjeea_98 wrote:
AJB77 wrote:
:lol: out of touch !
Hey, with a 760 in hand, you can afford to be out of touch. :lol: :twisted:
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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink] New post   30 Jul 2005, 14:44
AJB77 wrote:
banerjeea_98 wrote:
AJB77 wrote:
:lol: out of touch !
Hey, with a 760 in hand, you can afford to be out of touch. :lol: :twisted:


Baner could you do my quant for me in my exam? :P :P :P
Out of touch but i'm sure you are still on top of YOUR GAME!!!

This one also caught me naked (not even pants down).



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Re: For a set of integers, A is the arithmetic mean and S is the [#permalink]
30 Jul 2005, 14:44
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