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Sequence S consists of 24 nonzero integers. If each term in [#permalink]
 30 Mar 2007, 14:31
Sequence S consists of 24 nonzero integers. If each term in S after the second is the product of the previous two terms, how much terms in S are negative?
(1) The third term in S is positive.
(2) The fourth term in S is negative.
as usual, later I post the answer. Please, explain!!!
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Manager
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My pick is B.
let P= Positive &
N = Negative
Statement I:
the first 2 terms could be
P, P or (no N terms in the entire series this way)
N, N........ Cant tell...............insuff
Statement II:
The first 2 terms could be
N, P or
N, N
so the series could progress as
N P N N ..... or
N N P N........................................suff
both result in the same # of negative terms in the sequence.
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Manager
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I agree with Vikramjit - B.
I initially thought it was C but I re read the question and what it was asking for and I guess you can work out how many -ve nos there are.
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Correct is B. Thank you everyone!
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