A

2000003505

Level: 
A
Choose the three numbers that represent the arithmetic mean, the geometric mean and the harmonic mean, in that order, of the numbers \(2\), \(4\) and \(8\).
\( \frac{14}{3}, 4 ,\frac{24}{7} \)
\( \frac{24}{7}, 4, \frac{14}{3} \)
\( 4, \frac{24}{7},\frac{14}{3} \)
\( \frac{14}{3},\frac{24}{7}, 4\)

2000003504

Level: 
A
So far, Petr has the following marks in mathematics: \(1,\ 1,\ 2,\ 2,\ 2,\ 3,\ 3,\ 3\). He will write two more tests. What marks must he get on the two tests so that the average of his marks is at most \(2\)? Specify all the options.
\( (1,\ 1)\) or \((1,\ 2) \)
Only \( (1,\ 1)\)
\( (1,\ 1)\) or \((1,\ 2) \) or \((2,\ 2) \)
\((1,\ 2) \) or \((2,\ 2) \)