Civil Service Arithmetic Ability Practice Test Results

Question 1
74% answer correctly
(n + 5)(n + 4) = ?
\\(n^2\\) - 20n - 20
\\(n^2\\) - 20n + 20
\\(n^2\\) + 9n + 20
\\(n^2\\) - 9n + 20
Question 2
69% answer correctly
(n + 9)(n + 8) = ?
\\(n^2\\) - 17n - 72
\\(n^2\\) + 17n + 72
\\(n^2\\) - 72n + 72
\\(n^2\\) + 72n - 72
Question 3
41% answer correctly
Factor this equation: \\(x^2 + 2x - 3\\)
(x + 3)(x - 1)
(x + 3)(x - 3)
\\(2x(x^2 - 3)\\)
x(x + 2 - 3)