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In a data series that appears one number after another, each

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In a data series that appears one number after another, each [#permalink] New post 24 Nov 2005, 02:11
In a data series that appears one number after another, each number is the product of four and the square of the previous number. If the first number in the series is t, what's the third number that comes up after the appearance of t?
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 [#permalink] New post 24 Nov 2005, 02:20
In a data series that appears one number after another, each number is the product of four and the square of the previous number. If the first number in the series is t, what's the third number that comes up after the appearance of t?

Function X(n)

X(1) = t
X(n) = 4 * (n-1)^2 (n>=2)

**********************************************

X(1) = t
X(2) = 4t^2
X(3) = 4 * (4t^2)^2 = 4^3 * t^4
X(4) = 4 * (4^3 * t^4)^2 = 4^7 * t^8
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Re: Data Series [#permalink] New post 24 Nov 2005, 05:11
x(1) = t
x(2) = 4(t^2)
x(3) = 4(4t^2)^2 = 4^3 t ^4
x(4) = 4(4^3 t^4)^2 = 4(4^6 t^8) = (4^7)(t^8)
Re: Data Series   [#permalink] 24 Nov 2005, 05:11
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