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Positive integer n

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Positive integer n

by jfranco23 » Fri Mar 13, 2009 4:50 pm
For each positive integer n, the integer n* is defined by n*=(n^2)+1. What is the value of the positive integer k?

1. When k is divided by 4, the remainder is 1
2. 18<=k*<=36
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by cramya » Fri Mar 13, 2009 5:47 pm
I would go with B

Stmt I

k = 5 k=9....

INSUFF

Stmt II

Applying defnition of n*

k*= k^2+1

We have
18<=k^2+1<=36

Subtract 1

17<=k^2<=35

k=5

SUFF
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