ds-mod

Question

Is |x|=y-z?
1)x+y=z
2)x<0

I found this one good !!

rampuria · Answer

Taking 1: x = z-y

Now if x is +ve, |x| = z-y but if its -ve then |x| = y-z. Now, our desired result is the latter. So we must combine B with A for the answer. Hence C

linau1982 · Answer

another C

x=y-z when x>0 or;

-x=y-z =>  x= z-y when x<0

bigfernhead · Answer

I went with A)

Is |x|=y-z?

Can also be written as:

|x|- y = - z

Point 1- If x > 0 Then x - y = -z
Point 2- If x < 0 Then -x - y = -z

1)x+y=z

Not sufficient, based on point 1 and 2. We need to know if x>0 or x<0

2)x<0

Does not say anything about y and Z. Not sufficient.

Answer is C.

LiveStronger · Answer

I go with A too

1. x = -(y-z)
|x| = y-z
Sufficient
2. No Sufficient

icandy · Answer

Is |x|=y-z?

Can also be written as:

|x|+ y = - z

How can you write the above? when you move y to the opposite side, it becomes -y and does not remain y.

scthakur · Answer

C.

From stmt1: x = z-y. Hence |x| could be z-y or y-z depending upon the value of x is +ve or -ve.

Stmt2 together with A gives that information.

bigfernhead · Answer

You're right. Just edited my post. Thanks.

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