Matematika A - 2010. ljeto, 1.

A. $-1.5\in \mathbf{Z}-1.5\; \backslash in\; \backslash mathbf\{Z\}$

B. $\sqrt{2}\in \mathbf{Q}\backslash sqrt\{2\}\; \backslash in\; \backslash mathbf\{Q\}$

C. $\frac{1}{2}\in \mathbf{R}\backslash frac\{1\}\{2\}\; \backslash in\; \backslash mathbf\{R\}$

D. $\pi \in \mathbf{N}\backslash pi\; \backslash in\; \backslash mathbf\{N\}$