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In Episode 3 of our GMAT Ninja Critical Reasoning series, we tackle Discrepancy, Paradox, and Explain an Oddity questions. You know the feeling: the passage gives you two facts that seem completely contradictory....- May 08
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20 Mar 2026, 23:34
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if scenario 1, x>=4 then solution would be 4 (since equal sign is also used) and 5. For scenario 2, x<4, solution will be 3 only. Thus 4+5+3=12
I personally prefer to use = sign with > only.
Mathematically, if you look at |x|, it will give x (i.e. no sign change) for x>0 or if x=0.
I personally prefer to use = sign with > only.
Mathematically, if you look at |x|, it will give x (i.e. no sign change) for x>0 or if x=0.
20 Mar 2026, 23:48
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i see you are cancelling the power of X-4 and thereby eliminating it. Instead if you take the x-4 on LHS and factor out, you will get (x-4)(x-5)=0 as equation which would give x=4 and 5 as solution.
When you cancel the terms like this, its basically division i.e (x-4)ˆ2/(x-4), and for this division or fraction to occur one assumption is x-4 (denominator) can not equal be to zero, which is not correct.
When you cancel the terms like this, its basically division i.e (x-4)ˆ2/(x-4), and for this division or fraction to occur one assumption is x-4 (denominator) can not equal be to zero, which is not correct.
