OG12上的几道题，请大家指点~

swyjtk · 发表于 2010-10-30 15:29:16

刚刚接触GMAT，原来数学程度也不好，所以前来请教，希望各位哥哥姐姐指点迷津！
SQ部分的：
98. On a scale that measures the intensity of a certain
phenomenon, a reading of n + 1 corresponds to an
intensity that is 10 times the intensity corresponding
to a reading of n. On that scale, the intensity
corresponding to a reading of 8 is how many times
as great as the intensity corresponding to a reading
of 3 ?
(A) 5
(B) 50
(C) 105
(D) 510
(E) 810 – 310

108. If t = 1
29×53
is expressed as a terminating decimal,
how many zeros will t have between the decimal point
and the fi rst nonzero digit to the right of the decimal
point?
(A) Three
(B) Four
(C) Five
(D) Six
(E) Nine

129. On a recent trip, Cindy drove her car 290 miles,
rounded to the nearest 10 miles, and used 12 gallons
of gasoline, rounded to the nearest gallon. The actual
number of miles per gallon that Cindy’s car got on this
trip must have been between
(A)
290
12.5
and
290
11.5
(B)
295
12
and
285
11.5
(C)
285
12
and
295
12
(D)
285
12.5
and
295
11.5
(E)
295
12.5
and
285
11.5

OG12上的几道题，请大家指点~

所属分类: GMAT考试

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