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Intern
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sequence gmat prep question. [#permalink]
 28 Oct 2009, 21:57
Question Stats:
100% (01:18) correct
0% (00:00) wrong based on 0 sessions
Q. For a finite sequence of nonzero numbers, the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative. What is the number of variations in sign for the sequence 1,-3,2,5,-4,-6.
a. one
b. Two
c. Three
d. Four
e. Five
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Senior Manager
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Re: sequence gmat prep question. [#permalink]
28 Oct 2009, 22:02
C
1, -3
-3, 2
5, -4
three pairs of consecutive sequence terms where product comes to be -ive
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Re: sequence gmat prep question. [#permalink]
28 Oct 2009, 22:05
thanks, i was having trouble understanding the question.
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Senior Manager
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Re: sequence gmat prep question. [#permalink]
28 Oct 2009, 22:17
np.. 1-2 hrs of wordy math and I'm not able to read any meaning into these 
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Re: sequence gmat prep question. [#permalink]
29 Oct 2009, 04:44
I will choose option 3.
1 * -3
-3 * 2
5* -4
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Senior Manager
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Re: sequence gmat prep question. [#permalink]
31 Oct 2009, 11:57
IMO C, the question needs to be read well before arriving at the right option..
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Re: sequence gmat prep question.
[#permalink]
31 Oct 2009, 11:57
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close
