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Find the indicated terms in each of the ...

Find the indicated terms in each of the sequences in Questions 7 to 10 whose nth term are :
`a_(n)=(n^(2))/(2^(n)),a_(7)`

Text Solution

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The correct Answer is:
N/a
`because" nth term of given sequence "a_(n)=n^(2)/(2^(n))`
`therefore" At n=7, "a_(7)=7^(2)/(2^(7))=(49)/(128)`
`therefore" "a_(7)=(49)/(128)`
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