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05 May 2021, 03:00
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D
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Difficulty:
15%
(low)
Question Stats:
79% (00:52) correct
21%
(00:58)
wrong
based on 38
sessions
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What is the value of (x − y)(y − x + 1) ?
(1) x − y = 2
(2) y − x + 1 = −1
(1) x − y = 2
(2) y − x + 1 = −1
05 May 2021, 03:11
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Bunuel
(1) x − y = 2
\((x − y)(y − x + 1)\)
\((2)(-2+1) = -2\) ..... Sufficient
(2) y − x + 1 = −1
\(y-x = -2\)
\((x − y)(y − x + 1)\)
\((2)(-1) = -2\) ..... Sufficient
Option D
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