is x ve i x y-8 ii x 2 y 2 i only i sufficient ii only ii sufficient ii

putting the value of x in eqn ii
(y-8)^2=y^2
from this, y=4
now, we can find the value of x.
so, both statements r reqd..
10 years agoHelpfull: Yes(14) No(0)
second can be used only as x=+y^1/2 or x=-y^1/2 So 2 s answer
10 years agoHelpfull: Yes(4) No(6)
only 2 is sufficient cz what ever value of y it will always give +ve value of x.
10 years agoHelpfull: Yes(4) No(5)
Both condition required..
10 years agoHelpfull: Yes(4) No(0)
2) option is true ..

becoz whatever the value of y is +ve or -Ve., It gives the value of x is alwayz positive.
10 years agoHelpfull: Yes(2) No(1)
neither of them are sufficient to gave answer
10 years agoHelpfull: Yes(2) No(2)
both required bcz when put the value of y from 1 into 2 we find the value of x =-4.sp both statement r required
10 years agoHelpfull: Yes(2) No(0)
Both Required
10 years agoHelpfull: Yes(1) No(6)
both statement is required only using second statement we cant predict the value of x as x = +-(y)^1/2 for any value of y
10 years agoHelpfull: Yes(1) No(2)
only 2 is sufficient because square of -ve no is always +ve
10 years agoHelpfull: Yes(0) No(2)
yea BOTH statement are required to answer but x is not +ve
9 years agoHelpfull: Yes(0) No(0)

is x +ve ?
i= x=y-8
ii=x^2=y^2

i=only i sufficient
ii=only ii sufficient
ii=both required
iii=neither statement sufficient