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25 Feb 2011, 07:17
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A
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Difficulty:
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82% (00:40) correct
18%
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What is the hundreds digit of the integer z?
(1) 10z = 93,120
(2) z rounded to the nearest hundred is 9,300.
(1) 10z = 93,120
(2) z rounded to the nearest hundred is 9,300.
25 Feb 2011, 07:50
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naaga
What is the hundreds digit of the integer z?
(1) 10z = 93,120
(2) z rounded to the nearest hundred is 9,300.
friends help me out
(1) 10z = 93,120
(2) z rounded to the nearest hundred is 9,300.
friends help me out
What is the hundreds digit of the integer z?
(1) 10z = 93,120 --> z=9,312 --> the hundreds digit of z is 3. Sufficient.
(2) z rounded to the nearest hundred is 9,300 --> 9,250<=z<9,350 --> the hundreds digit of z could be 2 or 3. Not sufficient.
Answer: A.
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Please post PS questions in the PS subforum: gmat-problem-solving-ps-140/ Please post DS questions in the DS subforum: gmat-data-sufficiency-ds-141/ No posting of PS/DS questions is allowed in the main Math forum. |
25 Feb 2011, 11:05
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2) is insuff since hundreds digit has range. Hence not suff to determine the exact value.
A is best.
A is best.
