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GMAT Problem Solving (PS) | Re: Except for the first two numbers, every number in the sequence –1, 3,

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rohan2345 wrote:

Except for the first two numbers, every number in the sequence –1, 3, 2, . . . is the sum of the two immediately preceding numbers. How many numbers of this sequence are even?

(A) none
(B) one
(C) two
(D) three
(E) more than three


Let's expand the series - { -1 , 3,2 , 5 , 7 ,12 , 19 , 31 ,50 , 81 , 131 ,212 .............. }

Thus, by adding a few numbers ( Actually ) we come to know that the correct answer will be (E) more than three
...

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