Ratsionaalarvud

I. Hulk ja selle elemendid.

1) Kirjuta välja kõik hulgaga A = {a; b; c} võrdsed hulgad.

A = {a; b; c} = {................} = {................} = {................} = {................} = {................}.

2) Kirjuta välja kõik hulgaga B = {k; l; m; n} võrdsed hulgad.

B = {k; l; m; n} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................} = {......................}.

3) Kirjuta välja kõik hulgaga C = {1; 2; 3} võrdsed hulgad.

C = {1; 2; 3} = {................} = {................} = {................} = {................} = {................}.

4) Kirjuta välja kõik hulgaga D = {<; >; =} võrdsed hulgad.

D = {<; >; =} = {................} = {................} = {................} = {................} = {................}.

5) Kirjuta välja kõik hulgaga Linnud = {part; tuvi; kurg} võrdsed hulgad.

Linnud = {part; tuvi; kurg} = {....................................................} = {....................................................} = {....................................................} = {....................................................} = {....................................................}.

6) Kirjuta välja suvalised 10 hulgaga E = {p; q; r; s; t} võrdset hulka.

E = {p; q; r; s; t} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................} = {...........................}.

• Kui palju on hulgaga E võrdseid hulki kokku? ..................................

7) Palju on 1-elemendilise hulgaga võrdseid hulki? ..................................

8) Palju on 2-elemendilise hulgaga võrdseid hulki? ..................................

9) Palju on 3-elemendilise hulgaga võrdseid hulki? ..................................

10) Palju on 4-elemendilise hulgaga võrdseid hulki? ..................................