Question

Repedeee dau coroana ​

Answer 1

Răspuns:

c)

Explicație pas cu pas:

$\frac{^{2)} 1}{8} < \frac{2n - 1}{16} < \frac{^{8)} 1}{2} \\ 2 < 2n - 1 < 8 \\ 2 + 1 < 2n < 8 + 1 \\ 3 < 2n < 9 \iff \frac{3}{2} < n < \frac{9}{2} \\ 1 \frac{1}{2} < n < 4 \frac{1}{2} \implies x \in \Big\{ 2; 3; 4\Big\}$

...... 1 .... 3/2 .... 2 .... 3 .... 4 .... 9/2 .... 5 ....