See attached question -- Question from GMATPrep#1-DS#8
Could someone explain why together these are sufficient but each alone are sufficient to answer if the least height from A(r) is greater than the least height from B(s) with a yes or no?
This is a Yes/No question and for sufficiency all that is needed is a YES or NO answer to each (1) and (2)
1) No, Ar is not greater than Bs -- r is less than s as stated
2) No, Ar is not greater than Bs -- No info about r and s -- Not enough info from the greatest (g,h) to deduce that r is greater than s
The correct answer is be C, I chose E forgetting about the fact that for yes/no questions, sufficiency is acquired by a yes or no -- i defaulted to not sufficient and hence E -- now i am thinking D because of yes/no sufficiency rules and I am now confused.
I am clearly not thinking properly about this problem -- Kindly put me back on track -- much appreciated
GMATPrep DS 8
This topic has expert replies
Yes the range, did not use that to get to the answer
A in [r,g], range --> g-r
B in [s,h], range --> h-s
question is:
Ar >Bs
or
g-r > h-s
g+s > h+r
(1) r<s>r ... nothing about g and h ... NOT SUFF
(2) g>h ... nothing about r and s ... NOT SUFF
Together is sufficient for g>h and s>r
hence, g+s > h+r or Ar > Bs ...
Thank you for taking the time to JPG the answer
much appreciated
Alain
A in [r,g], range --> g-r
B in [s,h], range --> h-s
question is:
Ar >Bs
or
g-r > h-s
g+s > h+r
(1) r<s>r ... nothing about g and h ... NOT SUFF
(2) g>h ... nothing about r and s ... NOT SUFF
Together is sufficient for g>h and s>r
hence, g+s > h+r or Ar > Bs ...
Thank you for taking the time to JPG the answer
much appreciated
Alain
- gabriel
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Hi,malnv wrote:let l1 be lowest value in A, l2 for B
(1).
r <s>h .. not suff.
combine 1,2 .
Given that g-h is +ve
i.e. l1 -l2 is +ve
l1 > l2
Ans: C
(update:having hard time with formatting..see attached jpg image)
can u tell me what exactly was the problem you faced with formatting.
To all members : - In the future if you face any problem while posting just send a PM to me, or any other moderator (or Eric) on the board. It would be really helpful.
Thank you
Hi Gabriel,
I am not sure, but some character combination seems to trigger this..
I tried to copy paste the text (as in .jpg), but if you look, it doesn't come out correctly. Something with < , > signs, or () or a combination of them..
Thx.
I am not sure, but some character combination seems to trigger this..
I tried to copy paste the text (as in .jpg), but if you look, it doesn't come out correctly. Something with < , > signs, or () or a combination of them..
Thx.
- gabriel
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Have reported the matter to Eric, I am sure it will be fixed soonmalnv wrote:Hi Gabriel,
I am not sure, but some character combination seems to trigger this..
I tried to copy paste the text (as in .jpg), but if you look, it doesn't come out correctly. Something with < , > signs, or () or a combination of them..
Thx.
Regards.
-
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gabriel, this problem was faced in past as well. Actually in a problem or solution, whenever we use "Greater than" or "Less than" sign, this problem comes. This problem is basically for the HTML tags. If in such posts, we select - "Disable HTML in this post" - the check-box, then we can get rid of this problem.
Correct me If I am wrong
Regards,
Amitava
Regards,
Amitava