Sequence S consists of 24 nonzero integers. If each term in : Data Sufficiency (DS)

2017-10-10T10:19:54-07:00

Agree with B. Was on D till I re-read for 24 NON ZERO integers --> which means they are all the same sign (either all +ve or all -ve) St 1: Term 3 is +ve. Case 1: 0,a,b..--> a,b,ab (terms 3 is +ve) Case 2: -b, -a, 0 --> -a, -b then (-a) (-b) = ab. Thus signs can be different so NOT SUFF in terms of exact number of -ve terms. St 2: Term 4 is -ve. can only happen when : -a, -b, ab, -ab Sq, -a sq b cubed. Thus since we know the signs we can count the number of -ve terms. SUFF

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