Question

Cardinalul multimii {A apartine N | x <sau = radical din 10

Answer 1

$x \leqslant \sqrt{10}$

$\sqrt{10} \cong \: 3.16$

$x \leqslant 3.16$

$x \: \epsilon \: N \:$

$= > \: x \: \epsilon \: \begin{Bmatrix} 0,1,2,3 \end{Bmatrix}$

$= > cardA = 4$