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What is the difference between the fourth and third terms of the

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Math Expert
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What is the difference between the fourth and third terms of the  [#permalink]

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New post 30 Nov 2015, 02:35
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

93% (01:39) correct 7% (01:44) wrong based on 99 sessions

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Marshall & McDonough Moderator
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Re: What is the difference between the fourth and third terms of the  [#permalink]

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New post 30 Nov 2015, 03:03
Fourth term = 3^4 - 4^2 = 65
Third term = 3^3 - 3^2 = 18
Difference = 65 - 18 = 47

Answer: C
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Re: What is the difference between the fourth and third terms of the  [#permalink]

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New post 30 Nov 2015, 04:25
a3 = 3^3 - 3^2 = 27 - 9 = 18
a4 = 3^4 - 4^2 = 81 - 16= 65

Difference , a4 - a3 = 65 - 18 = 47

Answer C
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Re: What is the difference between the fourth and third terms of the   [#permalink] 30 Nov 2015, 04:25
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