Exam 9: Sequences Series and Probability

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Select the first five terms of the sequence.(Assume that n begins with 1.) an=(1)n(nn+11)a _ { n } = ( - 1 ) ^ { n } \left( \frac { n } { n + 11 } \right)

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Find pk + 1 for the given pk . pk=k2(k+4)28p _ { k } = \frac { k ^ { 2 } ( k + 4 ) ^ { 2 } } { 8 }

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Find the indicated nth term of the geometric sequence. 7th term : 3,21,147,3,21,147 , \ldots

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Determine whether the sequence is geometric.If so, find the common ratio. 7,1.4,0.28,0.056,7,1.4,0.28,0.056 , \ldots

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Determine whether the sequence is arithmetic.If so, find the common difference. 3, 114\frac { 11 } { 4 } , 52\frac { 5 } { 2 } , 94\frac { 9 } { 4 } , 2,...

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Find the indicated nth partial sum of the arithmetic sequence. 1.5, 3.1, 4.7, 6.3, ...., n = 40

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Calculate the binomial coefficient. 29C29{ } _ { 29 } C _ { 29 }

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A college sent a survey to a sample of juniors.Of the 620 students surveyed, 307 live on campus, of whom 139 have a GPA of 2.5 or greater.The other 313 juniors live off-campus, of whom 153 have a GPA of 2.5 or greater.What is the probability that a survey participant chosen at random has a GPA less than 2.5?

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Find the sum using the formulas for the sums of powers of integers. n=17n5\sum _ { n = 1 } ^ { 7 } n ^ { 5 }

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Use sigma notation to write the sum. 13(1)+13(2)+13(3)++13(9)\frac { 1 } { 3 ( 1 ) } + \frac { 1 } { 3 ( 2 ) } + \frac { 1 } { 3 ( 3 ) } + \ldots + \frac { 1 } { 3 ( 9 ) }

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Use the binomial theorem to expand the binomial. (z2+b)4\left( \frac { z } { 2 } + b \right) ^ { 4 }

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Evaluate nPr{ } _ { n } P _ { r } . 7P4{ } _ { 7 } P _ { 4 }

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Use mathematical induction to solve for all positive integers n. 16+34+52+70++(18n2)=?16 + 34 + 52 + 70 + \ldots + ( 18 n - 2 ) = ?

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How many four-digit numbers can be formed under the following condition? ​ The leading digit cannot be zero and the number must be less than 7,000. ​

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In how many ways can seven people sit in a seven-passenger car? ​

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Write the first six terms of the sequence beginning with the given term.Then calculate the first and second differences of the sequence.State whether the sequence has a linear model, a quadratic model, or neither. A1 = 2 An = an - 1 + 2

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Evaluate nCr{ } _ { n } C _ { r } using the formula from this section. 5C3{ } _ { 5 } C _ { 3 }

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Write an expression for the nth term of the geometric sequence.Then find the indicated term.(Round your answer to three decimal places.) a1=2500,r=1.005,n=60a _ { 1 } = 2500 , r = 1.005 , n = 60

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Write the first six terms of the sequence beginning with the given term.Then calculate the first and second differences of the sequence.State whether the sequence has a linear model, a quadratic model, or neither. A1 = 3 an = an - 1 - n

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Use the Binomial Theorem to expand the complex number.Simplify your result. (5+i)4( 5 + i ) ^ { 4 }

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