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Joined: 15 Dec 2015
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Is y between 1 and 2, exclusive?
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25 Dec 2015, 18:32
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Is y between 1 and 2, exclusive? (1) y^2 is less than y (2) y^2 + y is between 1 and 2, exclusive Sent from my iPhone using Tapatalk
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Re: Is y between 1 and 2, exclusive?
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25 Dec 2015, 19:11
sara86 wrote: Is y between 1 and 2, exclusive?
(1) y^2 is less than y
(2) y^2 + y is between 1 and 2, exclusive
Sent from my iPhone using Tapatalk Hi, (1) y^2 is less than y since y^2 is less than y, we can say that y is positive.. Also any value above 1, will have a square more than number ... so y has to be between 0 and 1.... suff (2) y^2 + y is between 1 and 2, exclusive.. any number more than 1 will have its square more than 1.. so when we add square of the number and the number itself (y^2 + y), it will always be more than 2.. so the answer to Q is NO.... suff ans D
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1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
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Re: Is y between 1 and 2, exclusive?
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25 Dec 2015, 19:20
But statement (2) explicitly states the condition that (y^2 + y) is within the range 1 and 2, exclusive...
So how did statement (2) disprove the range given in the question ?
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Re: Is y between 1 and 2, exclusive?
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25 Dec 2015, 19:29
sara86 wrote: But statement (2) explicitly states the condition that (y^2 + y) is within the range 1 and 2, exclusive...
So how did statement (2) disprove the range given in the question ?
Sent from my iPhone using Tapatalk Hi, Any number above 1 will have the value y^2 + y more than 2... this means if it is given as y^2+y lies between 1 and 2, y cannot be greater than 1.. this gives us an answer to the statement Is y between 1 and 2, exclusive as NO.. this makes 2 alone also suff.. As a matter of fact if it is given as y^2+y lies between 1 and 2, y will be between 0 and 1..
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1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
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Re: Is y between 1 and 2, exclusive?
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25 Dec 2015, 19:41
Oh okay, now I get it , the question got my mind twisted, lol!
Thnx anyway!
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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 05:43
sara86 wrote: Is y between 1 and 2, exclusive?
(1) y^2 is less than y
(2) y^2 + y is between 1 and 2, exclusive
Sent from my iPhone using Tapatalk Although the answer is D . but both the statements are giving different values of y. This will not happen in the GMAT. Here for statement 1 : y is between 0 and 1 For statement 2: Y is NOT between 0 and 1 . Check by putting y = 1/2 in statement 2 and we will see that y^2 + y is 3/4 hence y is not between 1 and 2 . In fact can anybody give me the the range of values of Y for which statement 2 is satisfied ? Thanks .
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 Stne



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Is y between 1 and 2, exclusive?
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19 Jul 2018, 05:54
stne wrote: sara86 wrote: Is y between 1 and 2, exclusive?
(1) y^2 is less than y
(2) y^2 + y is between 1 and 2, exclusive
Sent from my iPhone using Tapatalk Although the answer is D . but both the statements are giving different values of y. This will not happen in the GMAT. Here for statement 1 : y is between 0 and 1 For statement 2: Y is NOT between 0 and 1 . Check by putting y = 1/2 in statement 2 and we will see that y^2 + y is 3/4 hence y is not between 1 and 2 . In fact can anybody give me the the range of values of Y for which statement 2 is satisfied ? Thanks . \(y^2+y>1.......y(y+1)>1.......y>0..or..y<1\).. \(y^2+y<2.......y(y+1)<2........y<1...or....y<2\).. So range is 0<y<1 and y<2
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1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 06:26
chetan2u wrote: stne wrote: sara86 wrote: Is y between 1 and 2, exclusive?
(1) y^2 is less than y
(2) y^2 + y is between 1 and 2, exclusive
Sent from my iPhone using Tapatalk Although the answer is D . but both the statements are giving different values of y. This will not happen in the GMAT. Here for statement 1 : y is between 0 and 1 For statement 2: Y is NOT between 0 and 1 . Check by putting y = 1/2 in statement 2 and we will see that y^2 + y is 3/4 hence y is not between 1 and 2 . In fact can anybody give me the the range of values of Y for which statement 2 is satisfied ? Thanks . \(y^2+y>1.......y(y+1)>1.......y>0..or..y<1\).. \(y^2+y<2.......y(y+1)<2........y<1...or....y<2\).. So range is 0<y<1 and y<2 Thank you for your reply , if range is between 0 and 1( for statement 2) then when I put y = 1/2 in statement 2 , why don't I get y^2 + y is between 1 and 2 ? rather y^2 +y = 3/4 which is less than 1.
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 Stne



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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 06:41
stne wrote: chetan2u wrote: stne wrote:
Although the answer is D . but both the statements are giving different values of y. This will not happen in the GMAT.
Here for statement 1 : y is between 0 and 1 For statement 2: Y is NOT between 0 and 1 . Check by putting y = 1/2 in statement 2 and we will see that y^2 + y is 3/4 hence y is not between 1 and 2 .
In fact can anybody give me the the range of values of Y for which statement 2 is satisfied ? Thanks .
\(y^2+y>1.......y(y+1)>1.......y>0..or..y<1\).. \(y^2+y<2.......y(y+1)<2........y<1...or....y<2\).. So range is 0<y<1 and y<2 Thank you for your reply , if range is between 0 and 1( for statement 2) then when I put y = 1/2 in statement 2 , why don't I get y^2 + y is between 1 and 2 ? rather y^2 +y = 3/4 which is less than 1. Hi... I didnt get into exact calculation.. so \(y^2+y1>0\)... let it be =0 then roots are \(\frac{b+\sqrt{b^24ac}}{2}.......\frac{1+\sqrt{5}}{2}=\frac{1+2.236}{2}=1.236/2=0.618\) so 0.618<y<1
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1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 07:03
Thank you again, shouldn't both the statements give the same range of Y, isn't there a contradiction , among the statements. Especially since the answer is D. For statement 1 : 0 < Y<1 For statement 2 : 0.618<y<1
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 Stne



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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 07:13
stne wrote: Thank you again, shouldn't both the statements give the same range of Y, isn't there a contradiction , among the statements. Especially since the answer is D.
For statement 1 : 0 < Y<1 For statement 2 : 0.618<y<1 It's Correct because the range 0.618<y<1 is subset of the range 0<y<1... If we were to find the range then it will be 0.618 to 1.. What could be wrong is.. If we had 0<y<1 and second statement gave y>2 Here although Ans would be D, but question will be flawed as it gave two different ranges
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1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
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Re: Is y between 1 and 2, exclusive?
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19 Jul 2018, 08:29
chetan2u wrote: stne wrote: Thank you again, shouldn't both the statements give the same range of Y, isn't there a contradiction , among the statements. Especially since the answer is D.
For statement 1 : 0 < Y<1 For statement 2 : 0.618<y<1 It's Correct because the range 0.618<y<1 is subset of the range 0<y<1... If we were to find the range then it will be 0.618 to 1.. What could be wrong is.. If we had 0<y<1 and second statement gave y>2 Here although Ans would be D, but question will be flawed as it gave two different ranges Thank you, Got it.
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Re: Is y between 1 and 2, exclusive? &nbs
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