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Maths-

General

Easy

Question

α is a solution of the equation $z to the power of n equals left parenthesis z plus 1 right parenthesis n$ where n $greater or equal than$ 2, $n element of N$ . Then the probability that $alpha$ lies on the real axis is

$\frac{1}{n}$
$\frac{2}{n}$
$\frac{1}{n - 1}$
$\frac{2}{n - 1}$

The correct answer is: $fraction numerator 1 over denominator n minus 1 end fraction$

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