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Director
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If z = x+y, is z > 8?
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10 Feb 2019, 09:33
Question Stats:
84% (01:01) correct 16% (01:33) wrong based on 70 sessions
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If z = x+y, is z > 8? (1) x > 4 (2) y > 4
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Re: If z = x+y, is z > 8?
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10 Feb 2019, 09:48
CAMANISHPARMAR wrote: If z = x+y, is z > 8?
(1) x > 4
(2) y > 4 To find \(x+y>8\) from 1. we dont know anything about Y so insufficient from 2.y>4,y<4 ,insufficient Combining both also it is insufficient. Option E



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Re: If z = x+y, is z > 8?
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10 Feb 2019, 09:49
CAMANISHPARMAR wrote: If z = x+y, is z > 8?
(1) x > 4
(2) y > 4 IMO E KeyWord = x and y can be +ive or ive integers/numbers if z = x+y (1) x > 4, here y can take any value 2) y > 4, will imply that y > 4 or 4 > y Nothing about x Lets combine now x = 5.1 and y = 5.1, z > 8 Yes x = 4.2 and y = 6, z> 8 No
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If z = x+y, is z > 8?
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Updated on: 13 Feb 2019, 22:33
Solution Given:To find:• Whether the value of z greater than 8 or not Analysing Statement 1As per the information given in statement 1, x > 4. • However, from this statement we cannot infer any relevant information regarding y. Hence, statement 1 is not sufficient to answer the question. Analysing Statement 2As per the information given in statement 2, y > 4 • From this statement, we can say that y > 4 or y < 4. • However, from this statement we cannot infer any relevant information regarding x. Hence, statement 2 is not sufficient to answer the question. Combining Both StatementsCombining both statements, we get Now there can be different cases possible. For example, • If x = 5 and y = 5, then x + y = 5 + 5 = 10, and x + y = 10 = 10, which is greater than 8. • Alternatively, if x = 5 and y = 5, then x + y = 5 + (5) = 0, and x + y = 0 = 0, which is less than 8. Therefore, even after combining the statements, we cannot determine a unique answer. Hence, the correct answer is option E. Answer: E
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Re: If z = x+y, is z > 8?
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12 Feb 2019, 02:35
CAMANISHPARMAR wrote: If z = x+y, is z > 8?
(1) x > 4
(2) y > 4 Option Ez = x+y Option A, x>4 If y=2, x=5 then z = 5+2 = 7<8 Hence not true Option B, y>4 if y=5, x=2 then z=2+5=7<8 Hence not true Therefore, none of the two are true




Re: If z = x+y, is z > 8?
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12 Feb 2019, 02:35






