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The sequence a1, a2, . . . an, . . . is such that

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The sequence a1, a2, . . . an, . . . is such that  [#permalink]

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New post 02 Sep 2018, 20:07
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A
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The sequence a1, a2, . . . an, . . . is such that
an = 2an1 − x for all positive integers \(n ≥ 2\) and for a
certain number x. If a5 = 99 and a3 = 27, what is the
value of x ?
(A) 3
(B) 9
(C) 18
(D) 36
(E) 45

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Re: The sequence a1, a2, . . . an, . . . is such that  [#permalink]

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New post 02 Sep 2018, 20:43
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Re: The sequence a1, a2, . . . an, . . . is such that  [#permalink]

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New post 02 Sep 2018, 20:50
a4=54-x
99=108-3x
X=3

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Re: The sequence a1, a2, . . . an, . . . is such that  [#permalink]

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New post 02 Sep 2018, 21:04
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Re: The sequence a1, a2, . . . an, . . . is such that   [#permalink] 02 Sep 2018, 21:04
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