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# 50 animals competed for prizes at a certain fair. How many of the anim

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50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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Updated on: 03 Jun 2020, 12:27
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50 animals competed for prizes at a certain fair. How many of the animals won prizes?

(1) Of the animals that competed, 100% of the cows won prizes.
(2) Of the animals that competed, 50% of the non-cows won prizes.

Same types question:

Originally posted by TheUltimateWinner on 28 May 2020, 09:57.
Last edited by TheUltimateWinner on 03 Jun 2020, 12:27, edited 2 times in total.
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Joined: 23 Feb 2015
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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28 May 2020, 10:00
50 animals competed for prizes at a certain fair. How many of the animals won prizes?
1) Of the animals that competed, 100% of the cows won prizes.
2) Of the animals that competed, 50% of the non-cows won prizes.

Hello Experts,
EMPOWERgmatRichC, VeritasKarishma, IanStewart, chetan2u, ArvindCrackVerbal, GMATinsight

I have a query on this question..
We should never keep our eyes on statement 2 when we check statement 1, right? So, how will someone know that there are 2 segment (i.e., cows VS non-cows) without reading statement 2? Statement 1 directly says that 100%. That means there is nothing "left". So, why do we not consider statement 1 sufficient (apart from statement 2)? I mean: What's the wrong with someone if s/he takes all 50 animals as 'cows' group?
Note: Question prompt did not separate "animals" as 'cows' VS 'non-cows'. If statement 1 use 99% then we can think of another groups (i.e., non-cows). Also What if there is just 1 animal in the question prompt?
Thanks__
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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28 May 2020, 11:06
1
I have a query on this question..
We should never keep our eyes on statement 2 when we check statement 1, right? So, how will someone know that there are 2 segment (i.e., cows VS non-cows) without reading statement 2?

Because some "animals" are not "cows". An animal might be a parrot or a donkey or an iguana or a fish. That's not something a question needs to tell a test taker.

Statement 1 directly says that 100%. That means there is nothing "left". So, why do we not consider statement 1 sufficient (apart from statement 2)? I mean: What's the wrong with someone if s/he takes all 50 animals as 'cows' group?

If Statement 1 said "100% of animals won prizes", it would be sufficient. But it doesn't say that. It only talks about some of the animals, the cows.

If someone did assume all 50 animals were cows, that person would be assuming something you don't know to be true; you don't know how all the animals are cows. So that person would be using more information than the question provides, and would thus be making a logical mistake.

Note: Question prompt did not separate "animals" as 'cows' VS 'non-cows'. If statement 1 use 99% then we can think of another groups (i.e., non-cows). Also What if there is just 1 animal in the question prompt?
Thanks__

Statement 1 can't use 99%, since that's mathematically impossible with only 50 animals in total (you'd get a decimal number of cows, which is impossible).

If there were only 1 animal in total, Statement 2 wouldn't make any sense. Statement 1 alone would be sufficient in that case, because there can't be zero cows (it doesn't make sense to say "100% of cows won prizes" if there are no cows at all). So you could then conclude that the one animal in question is a cow, and that it won a prize. But you'd never see that situation on the GMAT, so there's no reason to worry about it.
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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28 May 2020, 16:14
50 animals competed for prizes at a certain fair. How many of the animals won prizes?
1) Of the animals that competed, 100% of the cows won prizes.
2) Of the animals that competed, 50% of the non-cows won prizes.

Hello Experts,
EMPOWERgmatRichC, VeritasKarishma, IanStewart, chetan2u, ArvindCrackVerbal, GMATinsight

I have a query on this question..
We should never keep our eyes on statement 2 when we check statement 1, right? So, how will someone know that there are 2 segment (i.e., cows VS non-cows) without reading statement 2? Statement 1 directly says that 100%. That means there is nothing "left". So, why do we not consider statement 1 sufficient (apart from statement 2)? I mean: What's the wrong with someone if s/he takes all 50 animals as 'cows' group?
Note: Question prompt did not separate "animals" as 'cows' VS 'non-cows'. If statement 1 use 99% then we can think of another groups (i.e., non-cows). Also What if there is just 1 animal in the question prompt?
Thanks__

The prompt tells us that 50 ANIMALS competed for prizes. We're asked how MANY animals won prizes.

At the start, we have no idea what those 50 animals are (maybe all 50 animals are the same type of animal or maybe it's a 'mix' of animals); in addition, we don't know whether an animal can win MORE than one prize or not. Thus, we'll clearly need some really specific information to answer this question.

Fact 1 tells us that 100% OF the COWS won prizes. This tells us very little about the NUMBER of COWS or total winners or total prizes; we know that EVERY COW won at least one prize - but that does NOT mean that all 50 animals were cows (nor does it mean that there were 50 prizes). There could very easily have been OTHER animals competing for prizes. The information in Fact 2 has NO bearing on these deductions.

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Rich
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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28 May 2020, 17:45
EMPOWERgmatRichC wrote:
in addition, we don't know whether an animal can win MORE than one prize or not.

That is irrelevant; the question asks how many animals won prizes, not how many prizes were awarded.
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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28 May 2020, 20:03
50 animals competed for prizes at a certain fair. How many of the animals won prizes?

(1) Of the animals that competed, 100% of the cows won prizes.
(2) Of the animals that competed, 50% of the non-cows won prizes.

I think whole question is based on speculation of "what if". If we exactly don't know what no. Or what constraint is used to define the no. of animals getting awards or how many awards, the question will give no particular answer.
Moreover GMAT never goes with speculation. We can't even state an universal truth as one, if it's not mentioned in question.

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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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31 May 2020, 08:20
50 animals competed for prizes at a certain fair. How many of the animals won prizes?
1) Of the animals that competed, 100% of the cows won prizes.
2) Of the animals that competed, 50% of the non-cows won prizes.

I have a query on this question..
We should never keep our eyes on statement 2 when we check statement 1, right? So, how will someone know that there are 2 segment (i.e., cows VS non-cows) without reading statement 2? Statement 1 directly says that 100%. That means there is nothing "left". So, why do we not consider statement 1 sufficient (apart from statement 2)? I mean: What's the wrong with someone if s/he takes all 50 animals as 'cows' group?
Note: Question prompt did not separate "animals" as 'cows' VS 'non-cows'. If statement 1 use 99% then we can think of another groups (i.e., non-cows). Also What if there is just 1 animal in the question prompt?
Thanks__

It is not mentioned that animals means just cows, so you cannot make that mistake in DS of reading more than what is given.

A similar case would be when we say..
In a class, 100% of girls passed.
If we were looking for % of total passed, we cannot say that the class consists of only girls.
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Re: 50 animals competed for prizes at a certain fair. How many of the anim  [#permalink]

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31 May 2020, 19:32
50 animals competed for prizes at a certain fair. How many of the animals won prizes?

(1) Of the animals that competed, 100% of the cows won prizes.
(2) Of the animals that competed, 50% of the non-cows won prizes.

Same types question:

E IMO.

Statement 1 : Of the animals that competed, 100% of the cows won prizes. -- we dono how many cows from the animals .. so Insufficient

Statement 2 : Of the animals that competed, 50% of the non-cows won prizes. -- we dono how many non -cows from the animals .. so Insufficient

Combining both also gives no info about COws and non-cows .. We can have 30 cows and 20 non-cows -- Prizes won = 30 + 10 = 40
-----------------------------------------------------------------------Or we can have 20 Cows and 30 non-cows ----- Prizes won = 20 + 15 = 35 .

So Combining also not sufficient . Hence E .
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Re: 50 animals competed for prizes at a certain fair. How many of the anim   [#permalink] 31 May 2020, 19:32