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18 Dec 2014, 07:05
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
81% (01:15) correct
19%
(01:24)
wrong
based on 328
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Each number in the arrangement above is obtained from the two nearest numbers in the column immediately to the left by subtracting the upper number from the lower number. What is the value of z ?
(1) x = 7
(2) t = 5
Attachment:
2014-12-18_1804.png [ 5.12 KiB | Viewed 6240 times ]
18 Dec 2014, 07:57
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from the question we can deduce that z=4-x and t=z-8
1.x=7 ; z=4-7=-3 sufficient
2. t=5; t=z-8
5=z-8
z=13 ; Sufficient
Ans D
1.x=7 ; z=4-7=-3 sufficient
2. t=5; t=z-8
5=z-8
z=13 ; Sufficient
Ans D
19 Dec 2014, 09:12
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I don't see the arrangement :\
