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Variation

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Variation

by mysseo » Thu Jan 12, 2012 6:47 pm
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

It was on GMATPrep. I am very confused about English wording.
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by pemdas » Thu Jan 12, 2012 7:06 pm
1*(-3)
(-3)*2
5*(-4)

c
mysseo wrote: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

It was on GMATPrep. I am very confused about English wording.
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