hi,
i have a query here. if i consider condition 1 then i can say
y=z-x
substituting in question i get |x|=y-z=z-x-z
which is |x|= -x
which can never be the case as mod of any value is not negative.
so can't i infer that statement 1 is sufficient??
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Is |x| = y - z ?
No, You can't say that, simply put x=-1 then the statement is right, now put x=1 it's not right, therefore statement 1 is not enough.manasgoswami1 wrote:hi,
i have a query here. if i consider condition 1 then i can say
y=z-x
substituting in question i get |x|=y-z=z-x-z
which is |x|= -x
which can never be the case as mod of any value is not negative.
so can't i infer that statement 1 is sufficient??
I felt this problem to be pretty simple.
question asks whether |x|=y-z? rephrasing it gives : -x=y-z ? or x=y-z ?
1. gives us x+y=z
=> x=z-y
=> -x=y-z
2. x<0 so it is negetive
both together gives us the information needed, i.e x is negetive , hence -x=y-z is true
question asks whether |x|=y-z? rephrasing it gives : -x=y-z ? or x=y-z ?
1. gives us x+y=z
=> x=z-y
=> -x=y-z
2. x<0 so it is negetive
both together gives us the information needed, i.e x is negetive , hence -x=y-z is true
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