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For a set of integers, A is the arithmetic mean and S is the [#permalink]
 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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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: DS - Mean and Sum [#permalink]
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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Agree with A, the explanations above are perfect.
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Fear Mediocrity, Respect Ignorance
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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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Senior Manager
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Yup forgot that possibility....Man all the practice down the drain..
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Fear Mediocrity, Respect Ignorance
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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. 
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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.
 out of touch !
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Senior Manager
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banerjeea_98 wrote: AJB77 wrote: out of touch ! Hey, with a 760 in hand, you can afford to be out of touch.
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AJB77 wrote: banerjeea_98 wrote: AJB77 wrote: out of touch ! Hey, with a 760 in hand, you can afford to be out of touch. Baner could you do my quant for me in my exam? 
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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