Civil Service Arithmetic Ability Practice Test Results

Question 1
43% answer correctly
What is the index in \\(\\sqrt[3]64\\) ?
3
4
\\(\\sqrt{ }\\)
64
Question 2
65% answer correctly
What`s the least common multiple (LCM) of 7 and 8?
224
7 and 8 have no common multiples
28
56
Question 3
54% answer correctly
\\(7^8 \\times 7^9\\) = ?
\\(7^{1}\\)
\\(17^7\\)
\\(7^{72}\\)
\\(7^{17}\\)