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Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 22:02
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68% (01:03) correct 32% (00:48) wrong based on 60 sessions
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Competition Mode Question Is \(x > y\)? (1) \(12x = 4c\) (2) \(c = 3y^4\)
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 22:20
St. 1 or St. 2 alone is insufficient because there is no direct relation between x and y. St. 1 and St. 2: x = y^4 (i) y is a positive integer => x > y (ii) y is a negative integer => x is positive => x > y (iii) y is a positive fraction => x < y (iv) y is a negative fraction => x is positive => x > y => Because of (iii), st. 1 and st. 2 are together insufficient. Answer: E Posted from my mobile device
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 22:33
Explanation: To find x>y
Statement 1: 12x=4c 3x=c cannot say about y Not Sufficient
Statement 2: c=3y^4 Cannot say about y. Not Sufficient.
From 1 & 2, 3x=3y^4 x=y^4 Let y= 1, then x=1 ; x>y No if y = 2, then x = 16 ; x>y yes Not Sufficient
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 22:36
Is x>y? (1) 12x=4c NOT SUFFICIENT. (2) \(c=3y^4\) NOT SUFFICIENT. Together 1 and 2 \(12x = 12y^4\) \(x = y^4\) \(1 = 1^4\) NO\(16 = 2^4\) YESNOT SUFFICIENT. Answer E.
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 22:51
Statement 1: \(12x = 4c\) \(3x = c\) We know only about x. Insufficient
Statement 2: \(c = 3y^4\)
We know only about y. Insufficient
S1 + S2 \(3x = c = 3y^4\) \(x = y^4\)
If y = 2 \(x = y^4 = 2^4 = 16 > 2\). YES
If y = \(\frac{1}{2}\)
\(x = y^4 = ( \frac{1}{2} )^4 = \frac{1}{16} < \frac{1}{2}\) NO
INSUFFICIENT
OA, E



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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01 Jul 2020, 23:07
E
x=y^4
They can both be between 0 and 1, in which case x is less than y, or they both are more than 1. In this case x shall be greater than y.
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 00:11
Individual statements are clearly insufficient as the information about the other variable is not available.
Combining both the statements, we get => 3x=3y^4 => x=y^4
when y=1, x=1 => x=y when y=1, x=1 => x>y
Hence (E) is the answer



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 01:40
IMO E
Is x>y?
(1) 12x=4c No information about y, Not sufficient.
(2) c=3y^4 No information about x, Not sufficient
Together: c= 3x = 3y^4 x = y^4 Let y=2=> x=16 , So x>y Let y=0.5=> x= 0.0625 , So x<y Not Sufficient.



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 03:11
12x=4c 3x=c while second statement implies c=3*y^4 therefore c is positive so is x and we have x=y^4 Now if y is between 0 and 1 y^4 will be a number less than y itself (0.1^2<0.1) therefore both statements together are insufficient imo



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 03:24
Both statement together are sufficient . as 12x=12y^4 ; x=y^4 ; so y could be 1 or 1 so both statement together are not sufficient



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 03:26
answer is E) both statement together are not sufficient 12x=12y^4 ; x=y^4 ; y= 1 or 1 ....x>y when y=1 and x=y when y=1 ... both together are not sufficient .



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 04:21
1. 12x=4c. Insufficient 2. c=3y^4. Insufficient
Combined, x=y^4.
x=y=1, => x = y x=0.0001, y=0.1, => x < y x=16, y=2 => x > y
all 3 conditions satisfy x=y^4
Insufficient.
Ans: E



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 04:43
IMO E.
Stmt 1 Gives nothing about y. Insuff.
Stmt 2 Gives nothing about x. Insuff.
1+2.
3x = 3y^4
x=y^4
x could be 1 x could be 0. x could be fraction. We cant say its greater than or less than y. So E
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 04:54
IMO E.
Stmt 1 Gives nothing about y. Insuff.
Stmt 2 Gives nothing about x. Insuff.
1+2.
3x = 3y^4
x=y^4
x could be 1 x could be 0. x could be fraction. We cant say its greater than or less than y. So E
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 12:02
Ans  E
Statement 1 3x= c, without value of y we cannot tell, so not sufficient
Statement 2 C= 3y4, without value of x we cant determine
Statement 1 &2 We get x=y4, With x=1, x=y With x= 2 , y= 16 so y>x So clearly it’s giving two different so it is not sufficient
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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 20:17
Is x>y?
(1) 12x=4c
(2) c=3y^4
1) 3x = c no info about y insufficient
2)c=3y^4 no info about x insufficient
1+2) 3x=3y^4 x=y^4
is y^4>y? if y=integers, yes if y=decimals, no insufficient
Ans E



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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02 Jul 2020, 20:37
Statement 1: \(12x = 4c \) => \(3x = c\) Insufficient as no information about y.
Statement 2: \(c = 3y^4\) Insufficient as no information about x
Combining both we get \(3x = 3y^4\) => \(x = y^4\) Can be of any value
Hence, OA is (E).



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Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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03 Jul 2020, 00:41
Clearly E.
Question doesn't state that x, y, and c cannot all be equal to 0. Therefore, x=y=c=0 is a condition that will always be true, unless one of the statements tells us that they are not equal to 0.




Re: Is x > y? (1) 12x = 4c (2) c = 3y^4
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